Have a nearly 4yo DD and a 7mo DS. DD has never shown any hostility towards him but is simply not that interested in him. Actually when he was tiny she was quite intrigued, rather in the way you might be if your parents brought home a puppy, but now he’s a bit more of a proper person she just blanks him most of the time. I think maybe there’s a bit of resentment creeping in that he’s taking up more attention. I am trying not to push her into interaction she obviously isn’t up for, but I’m feeling a bit sad at the same time that the wonderful blossoming of sibling friendship I had heard about from friends hasn’t really happened yet. Will it ever?! Has anyone else had an indifferent elder sibling who eventually became interested and friendly to the young one?