Mary, don't panic. Will she eat a bit of wet food from a can? Do you have any more of that luncheon meat? It is possible that the med has upset her little tummy.

What I usually do if I have to give meds, is let them eat a bit first, then wait for about 20 mins...then give the meds...then food immediately after. By "sandwiching" the meds between the food, it seems to avoid any upset tummies.