After she checked out the apartment she settled behind the water bed for a nap. When I went for my nap she came out and joined me in bed for a cuddle. I woke up with her next to me. Now she's sleeping on the unfolded clean laundry on the kitchen table.
Thanks for all of the positive energy. I was pretty sure it was just a cyst, buta part of me couldn't help but to worry.
When she has her dental in a couple of months I'll have them remove the lump then. No sense putting her through any further trauma to have it removed otherwise. But since she will be under anaesthetic, they may as well go ahead and remove it then.