And no, your not the only one. My 10 year old daughter never brushes her hair or at least it looks that way. And to top it off the 3 year old is taking after sweet sisters grooming habits or lack off, 3 yeard old also has very fine curley hair that if not brushed becomes matted like a dog if not groomed at least twice a day. I fear this will pass when 10 year old starts to like boys.