No. She is featured a lot more in the latter 25% of the game, but she is reserved for her 'munchkin' (which was misspelled twice within three lines of each other). While you might be disappointed in not making her yours, I think what she gets is much better for the story.
Edited: She isn't really "involved" as much as she is "seen" in the latter part of the game. She never becomes a main or even prominent side character, imo.