The appetite stimulant sounds like a good idea. Meanwhile, you can dab a bit of mushy canned food mixed with butter onto her paws now and then so she'll lick it off. Is she drinking water and using her litterbox comfortably?

Catnip is actually an appetite stimulant - maybe a fresh catnip toy or some catnip sprinkled on her scratchboard or favorite sleeping spot might help.

Good luck! Please keep us posted.

Love, Columbine