I'm sorry but this is bullshit. Ivy offers Lena party drugs once. If Lena refuses, next time Ivy takes drugs herself the player has to make Lena ask for them (and burn a willpoint on it) because Ivy won't make the offer again. Furthermore, there's absolutely no basis to presume that because Ivy offers Lena's to choose if she wants some party drugs, then she'd just drug Holly without her knowledge -- Ivy clearly shows she understands and respects consent.1) Ivy loves to push drugs. She has pushed them on Lena twice at least. She may also have done the same to Holly without her knowledge. "Here take this drink!" She is always trying to get holly drunk, and we know she has some extecy on her and she likes to give it to other girls.
This game isn't GGGB and Eva has stated it's not going to be like GGGB in terms on content, but much more grounded. So if even in the "wilder" previous game you had this sort of content upfront and in the open, there's really no reason other than wishful thinking to expect this, much more tame game, will have this sort of shit cranked up even further, by making it a completely unannounced asspull.5) In the previous game GGGB there is a scene where Arthur can get Ashley to spike Iris's drink to have his way with her. There may be something similar going on with Ivy and Holly in the new game. It was up front and on the table last game, but in this game it may be written as a mystery we may find out later.
I think it may be best for you to drop such hopes, or you'll only find yourself disappointed.