DH's family had a large family gathering on Christmas day (indoors, unmasked). DH is high risk and we did not attend. MIL (who already had covid and has anti-bodies) hosted two family members who attended the Christmas event the next day at her home indoors, unmasked. She is insulted that we requested that she quarantine (from us and her grandchildren) for 14 days. Am I wrong here?
Nope, you're doing the right thing.
I think she's thinking she's immune. The reality is that you can get it twice. You can't live your life based on other people -- do what you think is right. That said, if she's unconcerned about a repeat exposure, sounds like this is a broader issue that the request to quarantine may not solve if dh is truly at risk.
Not only can you get it twice, but having antibodies doesn't mean that you can't pass along a disease you *may* be immune to to someone else. (That whole piece still hasn't been proven about the current vaccines being administered.)
I wouldn't care if she is insulted. She sounds really selfish. The CDC says that one option would be "After day 7 after receiving a negative test result (test must occur on day 5 or later)." That would shorten the period somewhat if you want to compromise.
OP. Thank you. Just needed a reality check.