Probably because she had a newborn right after Sophie's child was born. She's addicted to tiny babies and with her own newborn she didn't need to get her fix from someone else's baby. The baby cannon has dried up now. If she somehow gets pregnant again or Katie/Ellie/Aimee has a baby Ophelia will be tossed aside for the new shiny toyThe question I have is....
Why does Sue do so much for I feel ya and Mouthy but she didnt for Sophie when she lived there? I know she hated Joe, could this be it