I am a firm believer that some outside time is good for everybody.
Is it really hot there still? I have read that some cats will groom themselves when they get overheated (I personally haven't seen any of my cats do it).
Eating on her own is a GREAT SIGN! She needs some food to fight this darn virus

. So even a little bit is better than none.
I have mentioned the food "Almo" to Winston for Bomber. There are some fish flavours that my cat's go ape

over. Their favourite is Tuna and Shrimp. Maybe if you mix a bit of that in her food, it will entice her

. It is not nutritionally complete so you can't feed it long term alone.