I liked her, she was a good character to use in battle, and I liked her Limit Breaks. I didn't mind the Materia side quest, as it was kind of fun to do, and I like Wutai.
Her personality was fun, but I have to say that once I noticed how obvious it was via dialogue that she was an optional character, I couldn't not notice. What I mean is, most of her lines seem like they were added in at the last minute, unless the scene has something to do with her storyline - like she makes a comment, that no one really pays any attention to, and it seems like it was added on. .