I remember when I first played the original years ago, I liked it but I remember not liking Yuffie, thought she was a vain, stuck up bitch who took advantage of the party. The Wutai side quest where she stole my materia and made me have to go rescue her and fighting really hard bosses without my materia but I saved her and she messed up my materia order and I was like "I am never using you again." Maybe I was too harsh, I don't know. She was fine in Kingdom Hearts.