Actually, he's a very good trainer and he wasn't making that as a serious suggestion, but he also didn't make any other suggestions. I think he just saw that she had been the victim of some poor training, and figured it would be more work than I had time to do (and that is very possibly true). I agree with you, though, that another horse could be more trouble than she is.
She's definitely not dangerous, just a bit head strong on occasion. I think she will be a great horse, and I want get some training experience with her, which is why I'm not turning her over to Tim.
Are you working her on a line inside the round pen, or just loose in the pen?