Yeah, she's terribly underused and got the shaft in the plot but to be fair she is sorta of a glaring reminder of how bad all the villains in this game really were. The others get some better closure but they were all poorly utilized. Cid is the other character who just felt like he was thrown in whenever the writer wanted to throw a curve ball and most of his scenes after Chapter 9 are less "That's awesomne and caught me by surprise!" and more "W-T-F *heavy sigh followed with an eye roll* Okay whatever...".