Ulla is always more prone to frankness than tact, so she'll tell him, "I don't know Zack well, but he's close with my warden, Warren, whose judgement I trust more than anybody else's. I work with Vincent in the infirmary, and I offered to help Aerith get plants from home. Sephiroth was annoying enough that I decided back when I was an inmate to ignore him as much as possible. It's boring listening to rants about how superior someone is. ...Though I suppose I haven't noticed as many of those lately. I'm not sure if he changed his mind or just got bored too."