A player having a romance with a hag has happened in a game. We're discussing that very game. It is possible, but if course it would take a skilled writer to put it off satisfactory.
Jaheria has already became higher druid since bg2 tob, I think she is too strong to become member of a new party as minsc. However, she can be a good quest giver that give out new quests to make your party progress.
