I have been working with an acquaintance who is becoming a friend to overcome each of our struggles.
She is going through a tough time. She has come to learn that her husband of 8 years and father of her only child has been fired, misapporpriating funds, not paying back the home equity loan (on the house she bought before the marriage and a loan he took because he was not making much) and on and on. She asked him to move out. He is angry and has circled the wagons and his family is out spreading lies and half-truths. She was able to discover some of this because her own photography business has fallen off significantly and for the first tiime in decades is now looking for a completely different source of income.
Where I am going with this is here - you are in survival time. you must put the oxygen mask on yourself first and then help those in your household. Yes there are people all around you drowning but you cannot save them all and some of them will bring you down with them. If you don't help they will dog cuss and try to destroy your name. Protect your own heart. Set your priorities on you and your household. It does not matter what they do. Let their poisonous arrows fall fallow at your doorstep. Let their meanness be nothing but a hoard of pesky flies in your face - bothersome and annoying but not lethal nor frightening.
You need all of your reserves to stay true at work and when you learn to ignore and let go of one set then you will become strengthened to experiment with doing the same with the N at work. See this as a opportunity to train and grow strong.