On page 305 in Jim Humble's newest book you will find this:
Three Golden Rules for Animals
1. If the animal is improving on the dosage you are giving and/or what you are doing, do not change what you are doing—as long as you see improvement, keep it up.
2. The same rule applies for animals as for people: if at any time your animal seems to get sicker on MMS, reduce the dosage you are giving by 50%. Once the sickness passes and the animal is OK with the smaller dosage, you can try to slowly work back up, but be careful to not make the animal sicker.
3. If the animal is not getting better, nor getting worse on the dosage you are giving, after two or three days, go to the next higher protocol.
In your case, I would suggest to stop all MMS at this time and see if her appetite improves. If it does, then start giving her MMS again, but at low doses and see what happens.