Dear Mei,
Surely pray for your daughter. God bless.
In the meantime, on the top of bringing her to see doctor, I suggest you to try something new in the food for your daughter. For instance, not just cook her noodles, I suggest you can buy some cute-cute pasta with some funny face to raise her appetite.
Or before passing her a bread, you can try cut it into cutie sharp or let her spread the butter, penant butter on the bread "by herself". That can also araise her appetite.
My daugher is now 2.6 years old, I feed her one soup spoon fish oil in orange favor everyday. It should be good for kid to increase the appetite and be stronger to defend with the virus.
Once your daughter's appetite is restored, everything will be fine. By then, you don't need to cut any cutie sharp of food to get her interest, she is willing to eat any normal food you cook.
Be patient, be caring.
Cheers,
twyam