Please keep in mind that outside of the mayo, none of this is my preferred grilled cheese accoutrements. Working with what I have on hand.
This. The pharmacy at the Kroger near me sells BinaxNow kits for like $25. Contains 2 tests. My kid has been Qteen 3x now for classmate exposure. It’s ridiculous tbhI'd get her tested or get an at home covid test. Walgreens/cvs/etc should have them. If she's negative continue on with your plans and just don't send her to school. If she's positive then quarantine and stay safe.