"She is quick to anger. She is concerned about rejection and ridicule. She feels strong urges and seeks short-term rewards. She prefers that others handle the leadership roles. She is relaxed. She is often cheerful. She is mostly unaware of her own emotions and rarely expresses them. She is incredibly compassionate and feels the pain of others. She is very disorganized. She needs alcohol to get through the working day. She is getting used to (causing) tragedy."
Reading her profile, I can think of some possibilities;
A) Those who were murdered made fun of her at some point and, her being rash and impulsive, wanted them gone.\
B) She was payed to kill the dwarfs, most likely by someone she looks up to. Oh, and if you don't have money, there are always...
services...
C) The victims were the jerk-asses of the fort and, with her being compassionate, she was asked to kill them for the sake of the fort.
D) She's bored of living there :I