Well the vet looked at my retic Lucy, he said that it's either from trauma or could be a tumor, possibly cancer. He said if it popped up suddenly it's probably trauma and we should watch it closely. If it gets bigger he will try to drain it. But if it's a tumor there's not much we can do about it. I'm also going to use a Reptifogger and use some diluted F10 vapor for 20 minutes per day for a couple weeks to give her a fighting chance while she recovers, I figure it can't hurt. Wish me luck!