donheff
Give me a museum and I'll fill it. (Picasso) Give me a forum ...
I think she is being irresponsible and immature. That said, she may be suffering depression or stress. I don't envy young folks trapped in this nightmare. If I was in your situation I would struggle with how to approach it too. In my area, testing is readily available. I would try to have a rational conversation and set down rules. Maybe an agreement that, after an encounter like the ones she is planning, she agree to isolate from you from you for several days and get a test a few days after the encounter. If clear back to normal. If she refuses to even consider steps to protect you, time to live independently.
One thing you mentioned might throw a wrench in the works for me. You said she and your wife are teachers working outside of the house. In a high positivity area, unless they are taking heroic measures, I would figure the game is up. In that case I would probably just accept the risk. If you are at very high risk for severe outcomes, maybe better for you to isolate from them and let them live their lives unfettered.
One thing you mentioned might throw a wrench in the works for me. You said she and your wife are teachers working outside of the house. In a high positivity area, unless they are taking heroic measures, I would figure the game is up. In that case I would probably just accept the risk. If you are at very high risk for severe outcomes, maybe better for you to isolate from them and let them live their lives unfettered.