My step-daughter is coming up to 7 and has lived with us full time since she was 4. When she came to live with us I was pregnant with my 1st. She does not see her mum and thinks that i'm it. I hate to admit that I treat both kids differently but I think sometimes I do. I am now expecting another baby in about 2 weeks and worry that things are going to get worse. I do love her but it can't ever be the same as the way I feel about the others. Am I the only person to feel like this?