DD is my pfb and it was my SIL who first made her laugh. At first I couldn't stop laughing too and it was honestly one of the most wonderful things I've ever heard. This was earlier on in the week and since then I have tried everything to try and get her to laugh again but she won't! She went to MIL's yesterday without me (I'm not very well) and was laughing again. Why can't I get her to laugh? AIBU to feel ever so slightly heart broken that the first time she laughed it was for someone else?