Went through it last year, my 7 y/o Lab, did chemo, she made it 12 months. Chemo didn't bother her at all and her quality of life was good. Check with the nearest University that has a vet school, they may have programs to help you out and have the latest info and treatment options. It isn't a diagnosis you want to hear but dogs generally do well with chemo and go into remission easily. Whatever treatment you choose, make the most of the time you get with your girl, good luck to both of you. You can do a search on the forum and find several threads about lymphoma as well.