Keum-boo with a regular kiln

[northerncindy]

I made several pendants with a PMC instructor a couple years ago when I was learning to use keum-boo. I gave one to a friend who recently told me the gold is wearing off and wondered if I could fix it. My guess is that I did something wrong when I first made it. I still have gold foil, but don't really want to buy the equipment right now - but would love to fix this for her. Is there a way to use my regular jewelry kiln to heat up the pendant and then put more gold foil on?