But having children and other family issues have generally not a lot to do with logic or rationality. I know a woman who has five daughters and just found out her sixth child will be a boy. She was not really upset, but feels very nervous and insecure about it - and from time to time thinks that she would be happier / more relaxed if this child was a girl, too. Which, in my opinion, is perfectly understandable. And it doesn't make her selfish or ungrateful, just human.
Congrats bobalina on your girl!