Looks like a situation for your trademark trickery.

Being that you are now, legally speaking, just a private security guard lacking the authority to detain anyone... and, furthermore, that you're currently in your civilian identity ( not that you did a particularly thorough job of keeping it that way)... what the other heroes would want you to do is, of course, to give them a call and keep an eye on things until they could arrive. Not only was it a crime involving malicious use of superpowers but it was a "sexy" one, the kind that spandex chasing reporters love to write about.

So, yeah. Their ideal scenario would be for that poor, frightened, embarrassed High School senior - who, you silently remind yourself, you aren't allowed to think of as a slut just because of how she looks, it isn't like she just chose to develop a body befitting a pornstar or be assigned a uniform a size too small - to get publicly groped until somebody with a media brand showed up to finally do something about it. Now that you were on the other side of that equation, suddenly it didn't feel so fair.

"T'hell with this." You pucker your lips and whistle loud enough to make everyone in the train car wince. "HEY!! I don't care if you are fat, balding Joe Creepshow fresh out of his appointment with the sex offender registry, or some self-styled glamorous crime queen who thinks everyone wants her..."

Not feeling obligated to make a corny avian play on words for once, you whip out your plastic tonfa and jab it out in front of you menacingly. "...you just stepped over the line, and now I'm going to beat your ass."

The blond who had been getting toyed with looks your way disdainfully rather than hopefully. Well, maybe she had had her heart set on a hero in costume coming to her aid as well. But this is what she got. Well... that and more, judging by the sudden handprint developing around her midsection to hold her in place, while some very naughty fingers get busy peeling her panties to the side. On the bright side, that drives the snotty look off her face and makes her get back to pleading to be left alone.

From what you can tell, the position of her assailant is immediately behind the schoolgirl, hugging her around the waist. Intentionally or not, the invisible person is using her as a human shield, and the train is too crowded for you to easily get around.

"...If the reason you got on here was to clamp your greasy mitts around some tits, wouldn't you rather try something more challenging?" You undo a button on your tight black minidress and use your free hand to jiggle one of your own firm, perky breasts. It's right here waiting - you aren't afraid of a challenge, are you?"

Suddenly, a pair of glistening, heavily-mascara-outlined eyes appears floating in midair, apparently disconnected to anything. A few seconds later, a pair of smirking pink lips appear right below them, speaking from behind the molestee. "Not bad, darrrrling," it says with a trilling r and a hint of an English accent, "but not in the same category as this lovely trrreat - and besides, I rather have a type. Perhaps if you were a blonde too, I would be more tempted to give you a little attention. But alas, 'tis not to be. Don't fret though. We're going to the same destination. I am just, hm hm hm, killing time during the ride."

You have taken a few steps closer, but as you do, the smile purses its lips tightly and vanishes, and then the eyes squeeze closed and likewise become invisible once again. Well, that makes sense, in a way - if her irises were invisible along with her skin, she wouldn't be able to see, would she? So that's how it is - by default, you can't see her but she also can't see you.

Well that's just adding insult to injury. This is an enemy that your powerset is practically tailor-made to deal with, in theory. In practice, thanks to all those damn inconsiderate bystanders crowding around and chattering and gasping, you can't pinpoint anything with sound waves, and even if you could, you STILL can't reach her! And if you manage to so much as injure a civilian right now, you are *not* covered by the general immunity that applies to sanctioned costumed heroes and could get sued, or worse.

"Ah... AH! AH! AH!" The bespectacled schoolgirl cries out rhythmically as an unseen object splits her exposed, meaty pussy open, sliding past the curtains and plunging up into her. By the way it wiggles and waggles you can tell that it is two fingers... and the stretch of it indicates when a third finger joins them in there.

For a few minutes, watching is all you can manage to do - except for throwing out a "Let her go!" or "You'll be sorry!" every 30 seconds just to let her and the bystanders know you aren't giving up yet. And neither is this invisible villainess giving up on molesting her victim. Buttons pop off and clatter on the floor as her top is ripped open - revealing that her achingly full brassiere has a crucifix pattern printed on it (what message is that supposed to send...?). You get to watch those mountains bounced up and down, one at a time, with invisible handprints showing everyone that they had too much soft, squishy give to possibly be artificial. After a few minutes of noisy 'schlick schlick schlick' fingering, the schoolgirl's eyes widened and she suddenly lurched forward, trying to get away - but she stopped in mid stride, caught by the handprints on her stockinged thighs, and her skirt was roughly ripped away as well. Her thighs are spread apart and you see those lips appear in midair again... down between them.

"Nooo - don't do that! I have to remain pure for marriage!" the blonde gasps, bringing her hands up to cover her blushing face. The disembodied mouth titters smugly. "Oh rrrrreally, kitten? And here I was thinking that you felt like used goods. I simply cannot afford to give anyone the benefit of the doubt these days you know... hrm hrm hrrrrrrm, I'll just have to give you the taste test."

A pink tongue extends out and starts lapping up and down rhythmically against the schoolgirl's protruding labial lips... although you hate to take the supervillainesses side in this and you know that the presence or absence of the hymen doesn't mean much, it does seem a bit odd that she keeps her pubes so carefully trimmed with a little yellow landing strip if she never expects anyone to see it. Goodness knows that it gets tiresome and uncomfortable having to book those "Brazilian wax sessions" all the time... Of course, it has the 'benefit' of allowing you and these bystanders to see every detail of that tongue caressing her excited folds and, eventually, starting to slip completely in as the lips come in for a messy kiss on her clit...

Closing your eyes for a moment, you drag your consciousness back to the practicalities of heroism and think... and consider. Well, doing exact imitations of other people's voices isn't easy, but you'll try it.

Wrenching metal sounds echo through the train car, followed by whooshing wind - but a clear, commanding contralto voice can easily be heard over it. "Put a stop to your trespasses immediately, you transparent tramp!" the voice of none other than Maiden America booms through the car. "If you had used your powers for good, perhaps you could have tasted real, responsible, American love. But instead, you're destined for naught by a cold, lonely jail cell! Take THIS!"

The wicked girl's eyes snap open and flip end over end as she does a backflip and comes out staring at the door to the side of the moving train... yet it is still closed, and all of the civilians are gawking at the schoolgirl as she collapses to her knees with a relieved sigh, not at Maiden America's gorgeous ass as they ought to be.

And that is all she sees before yellow liquid splashes right in her eyes, dribbling all over the floor and drawing a snarl of frustration.