She is beautiful, but in this market you would probably have trouble giving her away, there are beautiful well broke horses on my craigslist for next to nothing all the time yet I see them listed week after week, it's very sad and often times I fear the horses end up going to slaughter because no one takes them...if you were able to sell her(in my area at least) you would probably get less then 500
Sunny sorry to hear that you're mom has this attitude especially when she costs so little... in our market you couldn't even give this horse away even though she looks like a nice mare. You could probably get $100 at the auction but then you know who's going to buy her. By the time you take off all the costs of taking her there and the auction fees I wonder what you would be left with anyway.
If I were in a position (space and barn) to have a horse like this one I would.. and break and train her... I paid $2000 for a horse like that back in the mid 1980's... a little more known breeding (hunter breeding) and she was an unbroken 2 year old. Times were different.
Life is not in that place.. and acre of land and a house and proposed zoning would not allow it.
Why not keep her a little longer, train her, break her and tech her the basics under saddle and then sell her. If you decide to. Over here you would be surprised to know how many people are actually wanting a young TB to train up and educate and turn it into a show or an eventing horse. Poeple practically write adds in the trading post asking about them.