Do you think it would be possible to have a polite confrontation with your co-worker to see why she unfriended you vs trying to work things out as you have in the past? (If it makes you feel better I know sometimes I will unfriend ppl on FB temporarily - until I no longer feel I will blow up at them if they try to talk to me or burn with venom in my veins when I see them say something.) Is it possible that you are feeling ppl at your work are talking about you or about to spring something on you bc you are tensed about the situation with your friend?
I completely understand about loneliness on the holidays. I am married - but our marriage is strange at best and abusive at worst. My family (the ones living) rarely talk to me n specifically tell me NOT to contact them on holidays. So yes - I understand. I like to use music n movies to keep my mind occupied during those times. Not sure if that will work for you, but thought I would throw it out there
Hope you get to feeling better!
❤