I can so sympathesise. My ex..dd's Jessica and Emily's birthdad's girlfriend (whom he does not live with) son has just announced to my girls that his mum is pregnant :shock: . That is a mouthful! So the girls found out through someone else. They have found this particularly difficult. So I would definatley tell your dsd because then she is included in the loop so to speak. Step families certainly can be a little bit more difficult but you really sound like you are trying to do everything you possibly can to make your dsd loved and included.

Jo