I haven't went through the check list yet.
However, my daughter just found that the passenger front side floor board is totally soaked. It appeared to be water, didn't smell like antifreeze, but that didn't make since to me either.
I just took a look at what the wet vac sucked off the floorboard, and doesn't appear to be antifreeze or having any smell. I do know that under the hood, I notice bunches of crap (leaves) that would definitely get in the way of drainage that might be taking place. We just had good rain yesterday.
I don't want to assume that the floorboard leak and the no heat issue are related, but still suspect there is a connection, even though not anti-freeze best I can tell. Anti-Freeze was down some, but I hadn't checked it since bleeding a few days ago and after she has driven a bit, so I expected it to be down a little. The liquid in the wet vac was dirty liquid, no smell, whatever it was.
Tomorrow, I will get it in garage and see what I can see.
Appreciate any feedback anyone may have.