Where to begin... SO and I have 2 kids together Bio daughter 24 who also has a 3yr old daughter and a 17 year old Bio Son. SO has a 26 year old daughter. Our kids are half sibling. SD has lived with us since she was 18 years old. SO was Disneyland dad to SD only. When our family had parties vacations or other fun activities SD was always,always invited or attended. SD doesn't get along well with her Birth Mom, 24 hours is about the limit. When SD was younger she was very quiet and polite and enjoyed being around us.