Well, I've made the final decision of not getting her. Tiffany's taking her to the sales this weekend, so I suppose I'll pass.
I was originally looking for a personal, quiet and well-broke trail horse, but I have to say I probably wouldn't have minded a project pony. Ah well, maybe it's better this way. I'll probably find something...eventually.
I think you made the right decision. From the sounds of her she wasn't particularly remarkable. Even if you did train her your returns may be minimal.
Just be patient, this shows that your father is open to another horse. Just wait for something good to come along. If horses are going for that cheap you might be able to pick up something more suitable cheaply. Look around for a horse that has been out of work for a bit - often people sell them off cheap even if they have good training.
I wouldn't. People often buy horses with the thought of tuning them up and it doesn't always work out that way. Often, they can't unload them and they ending up being horses the person didn't want (other than to turn around to make a profit).
I'd think long and hard so you don't create problems for yourself down the road.