An unplanned nap and a bad surprise.

A strange-smelling rag is placed over her mouth.
The shock makes her inhale more than usual right away.
She loses all strength and passes out.

Some time later, Batgirl wakes up and gets her bearings.

This place looks nice- like a fancy apartment-, but not a place I've been before.
Who's place is this?
Why is it so cold?
Oh shit!

Batgirl suddenly realizes that she's naked, save for her cape and cowl.
She quickly tries to cover up.

"Aw, I was enjoying the view there," a voice says.
Batgirl recognizes it...unfortunately.

"Poison Ivy! What are you..."
"Shh. Don't talk too much and make me mad. I can easily tell my plants to gobble up that uniform...if you make me mad."

She can see a table- when it is gestured to- with her uniform on it. Next to it is one of Ivy's famous, giant plants.

Batgirl 'stands down.'

"Good girl. You know why I did this to you, don't you?"
"Is this about what happened to Harley?"
"Smart girl. Although, I don't think it is for the reason that you're guessing.

Obviously, we're an item. I don't mind that she got fucked by those guys- I mind that you let them wear her out.
She's no good to me tonight and, well, it's date night."
"So the rumors are true then?"
"100% of 50% of what you read is true, dear. And yes, she knew it was Date Night. I imagine that you would have been my present had things not worked out like this."
"So you want me to...I mean...with you...and your...," Batgirl says, hoping to be corrected.
"Yes.

Of course, you can always say 'no,' but that means a long walk home without your clothes.
So it is either pleasure me or enjoy a cold night. And yes, you will keep the cowl on- it is actually worse for you than being completely naked."