Why not marry the gay/trans(vestite) teacher, so he will be happy, they will stop bothering her with marriage and she can continue date the young boyfriend and do pretty much whatever she wants with some reasonable precautions, heck he can even help her pass literature and go to university and years later they can divorce and she can do whatever she wants.

Also what's the meaning of the end, are we supposed to think she drowned herself by laying in swimming pool? But you know it's not possible to drown yourself since we know she is swimmer, she lays on water not pulled down with some heavy stone, so if that was supposed to imply suicide it was pretty dumb and they should go with drugs or whatever more obvious, but drowning suicide by swimmer floating on top of the water is dumb as hell.