Julie,
I'm so sorry to hear the sad news. As someone else mentioned, the feline cancer group on Yahoo is very good and I know when I was active on that list that someone there also had a cat with mammary cancer. I think I remember who it was and will ask her if she can write you or you can write to her, gladly, if you would like that, OK? I think letting her live out her life with gentle home care is a very loving option, too.
Gentle hugs for you, dear Julie,
Anne and Jimi Too Cool, Simms and Sophie among other furry friends in MI
