How to have a daughter
Go to the harvest sprites' house. In their home there is a pot in the back. Talk to the pot 100 times (you'll know you are there when the pot says "you win"). Talk to one of the three harvest sprites, they will ask you what your wish is, say that your wish is to have a daughter. Your child will be a girl instead of a boy. (Note: this must be done in the first chapter of the game)