Despite her annoying and unfunny introduction, I accepted her offer to join me.. because thats what you do in a Bioware game. I didn't use her in my party though, and never had a single clue what the hell she was ever talking about whenever I had to talk to her in base camp. After doing her story mission however, I actually ended up kicking her out of the Inquisition - with pretty reasonable cause (without spoiling anything).
Also: I'm pretty sure her character is inspired by 'Mr. F' from Arrested Development, so when people tell me they romanced her.. hmm..