OK, thank you for the additional information. I strongly believe that the symptoms you are seeing are due to the Clomicalm. It is very concerning when cats don't eat--they don't do well when they go long periods of time without eating.
Here is the Plumb's Veterinary Drug Handbook adverse effect report for clomicalm: "anorexia, emesis, diarrhea
, elevated liver enzymes, and sedation/lethargy/depression....Cats have been reported to be more susceptible to the adverse effects than dogs."
The time for elimination of the drug can up to 72 hours--so even if you stop the drug now, there may be some side effects for up to three days, just so you are aware.
I would encourage you to continue to trying to force feed her, syringe feed baby food into her mouth if you have to.
As for her behavior issue, once she recovers from the side effects of this drug, you may want to either discuss a totally different drug like Prozac, or look into having a consultation with a behavior specialist to determine what other methods you can use to help her and your other cats get along more peacefully.
I hope this information is helpful--please let me know if I can answer any other questions.