APPROVAL PENDING
This sounds like it will be a very interesting idea to play out, but it's also one that takes a lot of control out of the other characters' hands (and therefore out of their players' hands). The compromise I give to it is that the other player gets to decide whether the attraction is sexual or just admiration/desire to get close to her and the effect isn't immediate, but the longer they are around her, the more "under her spell" they become, along with your original restriction that it wears off the more time they spend away from her.