I can't believe some of the derogatory comments here regarding the daughter.
Teachers are people too and the ones I know, as well as trying to prepare numerous remote lessons and marking etc are afraid of going back to work.
That said, I'm obviously sorry that LynG6 is having such a tough time, but her daughter is obviously trying to control the things she feels she may be able to.
She may be feeling that if she can't keep her home environment safe (Lyn's home) what chance does she have at school? And stories from schools that are still open are NOT encouraging.
Could you sit down calmly with her Lyn and ask her gently about her fears and exactly what she needs you to do for her to feel safe? Personally I would not be confrontational as that will undoubtedly make things worse. By being sympathetic and finding out calmly what she thinks you should be doing (and agreeing to some of them) you may be able to live more harmoniously till this is all over.
Good luck.
I do get irritated by .........