We finally got the roadside assistance guy out to jumpstart MrsBlue's dead car,
so it was homeside assistance in this case. He got it started, and confirmed
what we suspected, that the battery was basically shot. So rather than let it
idle to try and recharge the battery, I just drove it to the auto parts store
and replaced the battery. It's now working right again, and it's nice to have
confidence in it, especially in winter weather. Thankfully it died in front of
our house where it was easy enough to deal with, rather than leaving us stranded
Thanks Ant and Neutronbeam.