The Mom was in beauty pageants herself. I think it's awful that the Mom wanted to re-live her youth through her daughter. I think it's awful that they felt it necessary to parade their daughter around like they did so that they could be showered in compliments and, yes, money.
I don't know how things were for the little darling when the lights were down and it was just her and her family. However, I do feel that the parents, as selfish as their actions were, loved their daughter. What they did was, in my opinion, wrong - but not so wrong as to have to endure the pain of losing their daughter to murder.