I took her to the vet yesterday, and while some good things were found, most of them weren’t great. The first thing, she is chipped. No one has contacted about the chip, and neither number really worked, so we will wait for further action. The further action is all that is currently wrong with her. I got her caught up on shots and such, but she has heartworms, super early on, so she can make a full recovery... but to the tune of $1200. On top of that, she needs spayed. So, a free dog is never a free dog.
One of the good things I found out, is that she is quite good around other people and animals.