I am so terribly sorry for what has happened with your daughter especially when your grief is so new. I don't know the in's and out of what has happened, but whatever it is am ashamed of your daughter, missing her dad's funeral and not supporting you, but one day, when you are no longer here, the guilt will eat her up and spoil the rest of her life.
A similar thing has happened to me. Immediately after their dad died, our two sons decided that life was too short to be in unhappy marriages so both got divorced, they are in their late 40's with children, our youngest son no longer sees his two sons aged 7 and 9 because of his evil ex wife and I also don't see them. It is like you say, another bereavement and some days, I honestly do not know why I am still here. There is nothing for me here anymore, not since my husband died, I am like a fish out of water, even though I try and look after myself, go for facials and massages, but without my Peter, everything is pointless.
I do not go out everyday, I have never done that, I get out of bed and do what I need to do, either go out or stay in, it doesn't matter either way because I am on my own wherever I go.
Like I have said before, we have not only lost our husbands, we are nearing the last leg of our journey on this earth and I look back so many times and cannot believe I was once so young and pretty with an handsome young man by my side and I wonder if I cry for him, for me or for the life we will no longer have again.
I also keep busy. but it will never have the same pleasure, because at the end of the day we come home to an empty house. I see films advertised that we watched together many, many years ago, old TV programmes that I can no longer watch on my own.
I do hope you find friends at the widows club and be able to support each other.