Hoping for some help here.... I originally had some problems with this cat last May. Not eating, eating very painful due to inflammed gums at the back of the mouth. She is wild and I am unable to handle so in the end decided to try depo (steriod) shot. The shot has now waned and if it lasts only a few months I may as well euthanize her and give homeopathy a go with her. I'm going to trap her tonight and place her in confinement. Not much symptoms to go on other than:

*constant pain in the mouth due to rear gum inflamation -very red and raw
*all her teeth have been removed over the years (careful checking makes remaining bone chips unlikely)
*quick to startle, skittish
*small head, large abdomin
*usually a "good" eater
*submissive disposition around other cats (used to living in a colony)
*fair/red complextion with freckles

On the few symptoms I have, would Phos be a fair place to start or can anyone else suggest something better? or perhaps I should start with Arnica and wait for symptoms to become more evident while she is in confinement?
Although she is wild she has accepted the presence of humans but avoids contact with them. She has been confined before and it doesn't appear to cause her undue stress.