I believe that she has a kind heart that loves her family. A lot of people believe that she only married Lucius or her parents, but I believe she was attracted to Lucius because of his charisma, and confidence. She just wants whats best for her family, and I think that, due to her up bringing, she believed status and wealth were whats best. I think she deeply cares for Draco, and is willing to do what ever she needs to protect him. She is a very caring mother, and supportive wife. This is why she became a death eater, to support her husband. I wonder how life changed for her family after "you know who" was defeated. This would give you a better understanding of her character.