I've name changed but am a regular, more of a reader than a poster.
I have a step daughter aged 16. She is close to her father and under normal circumstances sees him 2-3 times a week. I do my thing and they do their's usually, it works for us all.
Her mother and I don't see eye to eye. Never have done, I wasn't the OW but have been treated as if I was. I try not to bring this into my relationship with my SD, but I think she bad mouths me quite a lot to her. We have mutual friends and they confirm this is the case.
SD's mother has not been following any of the CV rules, she's still travelling to see her boyfriends, she's taking children to supermarket with her, before lockdown she claimed to have symptoms but did nothing about it, still sent children to school, etc. Therefore SD has had potential exposure to CV (as we all have). I'm not sure what goes on in their house (don't want to know), but I suspect strongly that SD is being allowed to go and see her friends.
Husband and I have been really strict and followed the guidance to the letter, only leaving the house for essential travel once a week (supermarket and pharmacy). Both husband and I are working from home.
Husband wants SD to come to us next weekend. I said I don't think she should, he said that under 18s are allowed to see both parents (if separated) and we should encourage it.
AIBU to not want this? It's nothing against SD, it's everything to do with not wanting to spread CV.