Donna, didn't read the responses you got, but I say do not go. Don't. Visit GG on your own, after the holidays. You are welcome, of course you are. However, do not cause yourself more pain. You aren't letting him 'off the hook' by not going, just like you wouldn't be 'punishing' him by going.
Do what YOU want and feel up for. I don't think you are up for it. I wasn't up to and declined Thanksgiving invites from my x-inlaws. Was the right choice for me.
