I can attest that recruting her as a good character in Act 2 works wonders, cause that's what i did by cheating the game's variables through the unlocked console command...lol.
Other than that, she really did receive the "Imoen Treatment" in the original BG2, anything past her initial Act2-related plot offers nothing that she can interact with.
I wonder if she was really just an aborted idea of a NPC that still managed to get into the game.
