Is it normal to feel sad for my mother because she didn't get a daughter?

My mother never never really said it but I always got the feeling that she would have liked to have a daughter. Instead she got me and my younger brother. I know she loves us and cares for us a lot but it seems like she would have enjoyed having another female in the house. She always mentions something about our family being male dominant whenever there's an argument, and I know she isn't entirely serious when saying it, but she would have probably liked to have someone else to talk to all the time and maybe she wouldn't feel as lonely. I try communicating with her but I'm not very social and I have problems of my own, and my brother is kind of a troublemaker, so she can't connect with either of us on a deeper level. I'm more comfortable with my father but he likes to make me feel stupid sometimes for no reason so I don't really know what to think.