C, those are her feelings so they are valid to her. But understand that you did the best you could with the knowledge and tools at the time. Had you known better, you would have done better.
So, you need to first and foremost forgive yourself. You know the things you need to work on and you are doing that.
You cannot undo the past. It's that you learn from it that matters. It's what you do moving forward that matters.
Try to enjoy this holiday with your child. Make new memories. Do new things.
