Thank you all so much - your responses were very comforting. I feel so guilty and that I've let DD2 down somehow :-( and at the same time, angry and hurt.
OH thinks I should have asked her first before buying it and says I always go OTT (he never buys anything at all, so anything to him is OTT!)
I do now and then, but I really don't visit armed with sweets, gifts etc. Honestly!
I love books and really think they're an essential part of childhood so admit to buying those, but they don't take up much room. She has a 'nursery' with big toys in it, some of which she doesn't play with much now - but I know it's THEIR house and not my place to comment on that at all.
This response is very much par for the course with DD2. She has suffered a lot of mental health problems in the past and still battles with anxiety and depression, though she copes brilliantly with it thanks to the excellent therapy she finally had, and her own efforts. We've always been as supportive and loving as we possibly could but it's sometimes been a rough ride and treading on eggshells was a part of our lives from toddlerhood onwards. I became pretty much the emotional punchbag for her pain and distress (she has a congential physical disability too) and I got used to her taking things out on me - it wasn't pleasant but I understood why. We've talked about it a great deal and she regrets how she treated us when she was ill, but there are still flashpoints and I have to be careful not to appear to undermine in any way - something I am working on constantly. I often get it wrong, sadly.
DGD will be their only child and so just as they want to make the most of their daughter's childhood, so do we - though DH isn't as emotionally affected as I seem to be about things. At one stage I didn't think I would ever be a grandma and I cherish every moment we spend with her. I am also really looking forward to the birth of DD1's baby - who will also be their one and only, for other reasons.
I know my hurt and sadness is my problem and I don't want to make it DD2's. I like the ideas of swapping toys. Once the dust has settled and DD2 is less angry, I might suggest that, but right now I feel too undermined, humiliated and sad myself to discuss it with her.