Thanks to everyone for you kind words & thoughts. They mean a lot to us!
I'll be brief here because Andi has summed this up better than I ever could.
There is a very cruel irony at work here. If Lepto is the villian... and we only suspect (strongly) but do not know for sure yet... she must have gotten it while doing one of the things she loves the most - her run in the yard! A run that took her so long to get back up to be able to do.
But the vet did say that he was not ready to suggest that we put her down.
So we still have hope.... And our Maggs is a survivor!
Thanks again to you all.
Doug