I' m a bit baffled, that a game romance is all, that keeps her playing, since BG3 has so much to offer.
I'm not an Astarion expert tbh, but I think, it actually helps the romance, if you talk to the drow ( the drow lady in act 2 Moonrise Tower to be specific), when he is in the party, and let him decide. It's about building trust and he realises, that he is not someones toy anymore.
I don't know, if there is another chance, when doing his quest in act 3, maybe some of the many Astarion fans around can help. With Astarion everything is about making his own decision and not being forced to do anything against his will.
