My first thought was that her illness is starting to affect her motor skills. I’m so sorry for you and for Ink Blot. I’m all for doing what I can to save my animals but if I were in your shoes I would seriously consider helping her cross the bridge before she gets worse. Quality of life is very important and you already mentioned that she scratches at the tumor. With the way that’s bugging her, the deterioration of the motor skills and the questionable prognosis…it just seems like the kindest thing to do. I know how hard it is to make a choice like that, I just had to do it for a bunny I saved from a cardboard box on a table at Petco. Though my choice to help Thumper cross the bridge had more to do with my financial situation than my willingness to nurse her through an extreme surgery I was still relieved for her that she’s not suffering.
I wish you much luck in whatever course of action you choose to take. Just know that if the ending isn’t a happy one we’re all here for you. This is a tight knit little family and we’ll see you through.
Happy Easter to you and your family.