Great news! and congrats to her and Jack. We have a dog which had a large mast cell tumor when we first got him. We had it removed but the vet's couldn't be sure they got it all because of its size and location so we played a wait and see game and kept a close eye on the area. He's been clean for almost 4 years now, so I have every confidence Jack has a lot of time left!!! Congrats!!!