If you are in a mind altered state then you can’t consent to shit.

Let’s put it this way, would anyone allow you to sign a contract for a loan or house if you were drunk. No they wouldn’t.

Edit - furthermore if they (and that’s a big if as opposed to did) pushed the drinks and shots and who knows what else on her, to make it so she said yes then that sure as fuck proves they knew she had to be blitzed to say yes.