Bay Thoroughbred Mare I bought at Tilton's Auction in Maine in 2007

Does anyone recognize this mare? She is not tattooed. She has a “prophet’s thumb” on the right side of her neck. I was told she is a Thoroughbred but she was sold without her papers (if she ever had any). I’d love to know her actual identity and any history. The auction house said she may have come from Connecticut but that’s about all I know. Thanks!

This is from the day after I bought her at Tilton’s Auction in May of 2007: