Good luck I'm sure you found this tidbit at vetinfo.
https://www.vetinfo.com/feline-immunodeficincy-virus-treatment-with-lymphocyte-t-cell-immunomodulator.html
Fast Facts
The FDA is alerting pet owners and veterinarians of the potential for neurologic adverse events in dogs and cats when treated with drugs that are in the isoxazoline class.
Although these products can and have been safely used in the majority of dogs and cats, pet owners should...
Could you try to boil her some boneless chicken, I also used baby food 2 year to help werun eat. Turkey ham stuff like that.
Also check out the cat food recall just in case.
Then close the bedroom, treat the spot with angry orange to get completely rid of the smell. And see if the cat starts peeing elsewhere.
angry orange
It might be turf marking.