Spoke with the doctors.  As I anticipated from reading on the Internet, the cancer is fatal.  We're looking at weeks to maybe a couple months.  They may try and do chemo into the spine to prolong her life, but that's all it will do.  No cure.  

There is much to do now.

Shepard puppy needs shots.
I need to find the Will and my Power of Attorney paperwork.
Must pay her bills
Fix the back door of her house

She will be able to come home for a bit, if she doesn't progress too quickly.  Eventually her brain will fail her and she'll lose the ability to communicate or know where she is.  At which point it'll go to Hospice, most likely.

I appreciate everyone's kind words.  I am not emotional about it really.  I dealt with this with my Dad, and thought it sucks, I tend to try and get everything in order to make the transition as easy as possible for everyone else.  When my Dad died, I had a bit of a nervous breakdown letting all the stress go.  Hopefully that won't happen here.  I'm a bit overloaded with shit to do, so am just going to take it one day at a time.  She's not dead, she's still here, and so there is time to deal with things.  Just wish she could have enjoyed her retirement longer.