I have been with my DP for 3 years. He split up with his exP when his dd was just 1 year, she is now 13. She has two half sibs at her home and now has a new Half Brother at our home(our baby). I feels she hates our DS with a passion i've never seen before, I let it pass at first that she never interacted with him at all even though she spends a couple of days a week with us. DS is now ten months and loves to see her. He gets excited when she walks in the room, smiles, he's even mastered a false cough to get her attention but she doesn't even break a smile. It's breaking my heart to see his great efforts wasted!! what can I do? i've tried my damdest to include her in all we do she is our family! I now despair....and waffle!