purpleme12 "Italiangreyhound so are you saying that the foster parents wanted to adopt her but then social services decided she was to be adopted by the grandparents?"
No, she was being fostered by the white couple, and they had applied to adopt her. At 9 she would be very unlikely to be adopted by anyone else so social services would probably have been quite positive about the adoption (IMHO). Trans racial adoption does happen but I've no idea how common it is.
The grandfather is her biological grandfather (the father or her biological father. His wife is not the child's biological grandmother.) Sometimes grandparents are given the chance to have direct contact with children who are adopted. I think this is quite rare but I've heard of it once in real life.
The implication here is that because the child is black and the adoptive family are white this visiting between child and grandparent is really important. They wanted to start the unsupervised visiting between child and grandfather (and step-grandmother) before the adoption order was made. The belief was that the grandfather was no contact with his son *Kiri's dad) but I did feel very sleepy in it, so I may have missed something!