She won't admit it, she's rather greedy about her possessions, and is assumed to be a thief. She's been secretive since she joined. Honestly? No one knows why she joined, since she's actually rather rude. Midna is obsessed with her pearl of course, as most pearlcatchers, but she's taken a habit of stealing anything that's reflective or shimmers. There's an area in the den that everyone knows to stay away from, as it's a pile of gold, gems, and even some sparkly glass (they try to tell her that's dangerous, but she won't listen).