That is what I did with my dog, Sugar, when she was diagnosed with cancer. The biopsy was noninvasive, so I went ahead with that; we had 4 possibilities, only 1 was cancer. Each of the other 3 would have been relative easy to deal with. I knew I would not put her through chemo. The biopsy came back as cancer. So I just enjoyed my time with her, and we (vet and I) did what we could to keep her comfortable.

Similar with Creamsicle, Mary. You are very in tune with your pets; you will know when something is bothering her. Then if it is a matter of comfort, you can address that and she will continue to lead her happy life. Considering her special needs is very important; I'm glad you are factoring this in to your decision.