If you just go steal the amulet (I think it's an amulet) from Janus' mom, it's all good, when she becomes upset is when you keep starting up conversations with her. At least in my experience. No worries though, it's not like you have to interact with her again. One side note, the last time I went through Stormfist with Finn's lockpics, I stuck them in Rob's book first, and they never disappeared by the time I got to Iona's dungeon. Not sure if that made a difference or not. I'm beginning to think they really DID disappear because I dragged two chests down to that cellar and tried to open them.
