I am sorry you are having problems with depression and the hair issue is something that would cause most people to feel upset. I think you have the right to be upset.
I am sorry you daughter is having problems, all you can do is comfort her as you can not live her life for her or make her friends change.
Just keep on supporting her as you obviously care deeply for her.
I wish my Mom would have been like you.
Now if you can help them all have a Merry Christmas and put aside some of the worries by staying in the moment I think you will be OK. I hope you make good memories that will help you stay strong and know that we are here for you.