Well, to make a long sad story short:

After weeks of her tumor rubbing on the ground when she walks, the blood vessels that were near the surface of the tumor ruptured (sp), and some of the skin broke- it is bleeding really bad. It is weird- it will bleed horribly, and then it will stop. This afternoon, I had her sitting on a paper towel- 20 min later I went to check on her, and 80% of the paper towel was red. But since then- it hasn't been bleeding. We are afraid that it will be come infected, and then she will suffer even more- so we made the decison to end her suffering.