Not a huge problem, but a niggling one I mentioned a while back and have been meaning to raise again, because it's still bothering me.
Brother and his wife are divorced - it happened when their daughter was about 4.
My niece, who has turned out to be an astonishingly normal teenager bearing in mind the mother she had, sports two surnames. There's the official one on her birth certificate - my brother's name, our family name - and the one she uses in life, her mother's. Use of the family name started to be edged out when she was about 7, obviously under her mother's influence as she'd have been too young to take the decision herself. These days she is very diplomatic - both names start with the same letter and she will often just use her first name and initial. (Which is very cool-sounding, especially as she seems to want to go into the music business in some form!)
As I understand it there is no way her name can be officially changed without it being sanctioned by both parents - is this true? Because I don't think my brother would ever consent to having it changed - it would be seen as a final concession to his cow of a wife who has already made things difficult for him in more ways than you can imagine. Maybe he would if his daughter really wanted it, but I'm not sure. And will it cause problems for her in later life, having one name which she "goes by" and another which is the one on her birth certificate (when she comes to apply for jobs, etc.)?