Subleaser Wants Deposit Venmoed Back To Her. I Don’t Legally Owe Her A Dime.

I am subleasing an apartment from a woman who had never moved into the unit. She secured the place, then changed colleges during the off season of semesters, and so I am taking it over for the same month she was going to move in.

She paid her security deposit to the apartment rental office, and the money “stays with the unit” as they explained to me. I was in contact with her on Facebook and told her I legally did not owe her anything. She paid them $695- I offered to pay her $500 back of it as a courtesy. Good karma and what not.

Well I regret offering. She wrote me back and said she wants the full $695. I understand her frustration, but it’s not my fault she changed her life plans around after securing housing.

Can I legally say “nevermind- you shouldn’t have looked a gift horse in the mouth” and tell her forget I ever offered? I know it’s a dick move, but why as the person out nearly $700 would you push the luck you’ve just been given?? Most people would not have offered a single cent.

The office of the apartment has assured me I legally owe her nothing. But she will know where I’m living, and that doesn’t sit well with me.

What would you suggest I do?