Trying to influence change in a person who is always instigating chaos and discord between fellow co-workers is not an easy undertaking. However, a good way to start is to write by endorsement. This means formulating solutions for problems and giving the written suggestions to your supervisor, and then everybody wins. Your supervisor will take it from there. These matters will usually clear up within 48 hours.
Opposition usually leads to conflict.
Conflict usually leads to vindictiveness. Vindictiveness usually leads to trouble. If you know that you are not part of a negative situation, try and keep it that way. Moreover, if you cannot add something positive to the situation, then do not add anything. The older of her two daughters is now a pediatrician.