Explain everything to her

Sophie: "Ooo-oh-kay, uh... how do I put this...? Today I woke up as a sexbomb catgirl, and then I sort of... ascended, and now I've got magic powers."

You twirl your ears around for a bit, very clearly and pointedly spawning a golden necklace with enormous diamonds and sapphires embedded into it, spelling out the words 'Basically I'm God'. For added effect, you conjure an equally untastefully decorated but lavish crown and scepter. Stacy looks baffled, but still in disbelief. Before she can voice her concerns over the legitimacy of your powers, you decide to ascend once more, manually this time.

For starters, you grow about a foot in height. Your expanding boobs burst the seams of your jacket, before being torn to tatters. The ever-expanding flesh of your thighs bulldozes your loose skirt into threads. Your eyes turn yellow and gain a mesmerizing incandescence, while your hair puffs out wildly and drops all the way down to your ankles. Your nails morph into retractable claws - sharper than razors, harder than steel. For the sake of emphasis, you pluck out a single diamond from your crown and slice it in half by dragging it across your nipple.

There, heaving like a newly-turnt werewolfess reveling in her own power, clad in billions of dollars worth of jewelry, you erase any doubt that you are a Goddess in flesh.

With the same, recognizable girly voice that now seems incongruous to your divine body, you chipperly announce:

Sophie: "Also, I can do this with my tail!"

You extend your prehensile tail out towards Stacy and quickly swap its shape between different body parts, shapes and tools. An arm, a leg, a hacksaw, drill, a ball of yarn, a mass of streamers, a halbred, a morningstar and most appropriately, a cat o' ninetails. In your excitement the switches occur faster than the eye can perceive, and soon your tail is a giant haphazard mess of undulating shapes and textures. Realizing how out of control your tail's gotten, you retract and re-shape it back to normal.

Stacy is convinced, and frankly a single authoritative word away from falling to her knees and devoting her life to you.

Stacy: "Um... Waddya even need this dead-end job for then, Sophie? (Is it alright to call you Sophie? Please don't smite me or anything.) Like, I'm not that full of myself not to realize that this isn't the best work environment or anything."

Sophie: "You know, I think you're right. I didn't even consider it, haha. Guess I only came here to give my resignation. Are Goddesses exempt from the two-week advance notice?"

Stacy: "Yes."

Sophie: "Sweet. Bye!"

Saying this, you re-form your tail into a wrecking ball, and with a single spin throw it clean through the office wall. You jump down back to the parking lot and head to your car... which now reaches to your navel.

Sophie: "Damn. Didn't even realize how big I got. Let's downsize - this body's only good for intimidation anyways."

Like Mario losing his mushroom, you dwindle back to your previous, modest, Miss Olypmic supermodel-proportions. With a dab of magic, your ripped clothes are re-fitted onto your body, better than new. Back behind the steering wheel, the sudden vacant feeling of freedom overtakes you. What do the super rich even do all day? You could like, dismantle the mafia singlehandedly or end world hunger.

Sophie: "I'm gonna go have an ice cream."

All in time, it seems.

Sophie: "But wait, can't I just make an ice cream, with magic? If I can make cars and jewelry, then surely yes. But that's no fun!"

You decide that you'll refrain from using cat ear magic for the rest of the day. You'll learn to get a better grip of your tail that way.

Sophie: "Right now, kitty needs her cream. I know there's a kiosk at the mall near my home... but I don't think I wanna use the flying car - if I need a thrill like that anytime soon, I'll go to Six Flags."

Instead, you make quick usage of your tail's transformative powers and create for yourself a spine-connected motorcycle! With a bit of concentration, you're able to have it with a chique black color schme, too. You're not completely certain if the internals are fully functional, but that doesn't really matter as long as the damn thing moves.

With the connected portion neatly tucked away under your skirt, none will be wiser to your vehicle's unconventional origins. Before setting off, you decide to discard your bling. While it would be fun seeing someone try to mug you, it just doesn't scream 'incognito' to be riding around town looking like you've robbed a jewelry store. Not like you can't make more - but not today, today is all about tail-o-mancy.

The 'motorcycle' you've created at least runs like one, and unlike its big brother, this one doesn't fly. Once at the mall, you curve right between two parked cars, and discreetly turn your tail back to its normal form and function. You're pretty sure nobody saw you.

You stride confidently up the mall escalators, up to the second floor where, if your memory serves you right, is an ice cream stand. Not two steps away from blurting out your order, you stop to consider that you don't have any cash.

Sophie: "(Crud. How am I supposed to get money without magic? Work for it? Fat chance.)"

That hyuge, 5-dollar ice cream sundae beckons you. You must have it! If only there was another way for you to create things...

Sophie: "Aha!"

A stroke of brilliancy. You turn the end of your tail into an old-fashioned coin purse. Against all logic, it's brimming with coinage. Are they permanently tranformed pieces of your tail, or did you create them subconsciously with our ears? You dare not question. The sales clerk, who didn't witness your counterfitting process, happily accepts your money, though he looks oddly at your prominent ears, and the paws still leftover from your previous transformation.

You sit down at a nearby table overlooking the bustling mall, and while sampling the dairy delight, immerse yourself in thought. Where did these powers spring from? Are your tail- and ear powers the same form of power manifesting in different ways, or is your tail perhaps simply an indirect way of channeling your ear magic? There's gotta be a way to test this somehow. Maybe you should submit yourself to scientific study? If they try to go all SCP Foundation on you, you could at least escape with your powers. But perhaps magic can't be tested with science. Perhaps one would jeopardize the very integrity of reality by attempting to analyze and categorize magic.