UPDATE: Well, I've called every vet, rescue and shelter around Waller, Tx where she was picked up, and none of them have heard anything about a missing pit, but I'll keep my ears open for awhile just in case. But the overwhelming number of reactions I've gotten from these groups/people is that she was most likely a dump given her smallish size, fighting scars, and timid nature. They mostly seem to believe that she just wasn't up to par in their eyes as to what they're looking for in a pit/pit-mix. I mean... she's not really into any form of playing that could be construed as aggressive playing. She just tucks tail and shys away if you show any more aggression than hugs and backrubs... But hey... I can deal with that.