Thanks everyone for all the info and advice! I've been thinking that if I don't end up breeding her, I'd like to adopt, I actually just followed some horse adoption pages on Facebook a couple days ago and I think it's something id like to do. I would actually really love to adopt from BLM again, I had a mustang when I was younger but unfortunately I had to sell him. Id love the chance to adopt another. But at the same time, if I don't breed her I would kind of like to find a weanling, just because I'm having so much fun and learning so much by training her, I'd like to do it again in the future and start with as young of horse as possible. I know the BLM adopts out weanlings sometimes, so that might be an option. Plus I have plenty of land to keep horses on, June is at my grandparents and they have 60 acres, and I know they wouldn't mind me getting more horses as long as I continue to pay for the feed, etc. and I'm moving to a farm this summer just right down the road from them, it's small but there's plenty of room for a horse or two. I'm about to take some more riding lessons since it's been so long, and then I'm going to try and get my little sister some lessons as well, and if all goes well and she really does have an interest in riding I'll get her a horse, she use to not have any interest in them but June has peaked her interest. I would love to find a draft/morgan cross for her that's been used for beginners and kids, but of course that will be a while because I want to make sure it'll be something she really wants. I'm going to try to limit us to 3 horses, max. But you know how hard it can be sometimes! Anyways, I don't think there was any specific reason she wasn't halter trained, they just never got around to it. But their grand kids spent lots of time with her and gave her lots of treats, so she's gentle, but she's also spoiled. If I ask her to do any actual work she tries to bite. But when it comes to learning she's smart, and she's calm and not spooky at all, I've sat on her as of yesterday. We just have to work on the fact that she has to do work when asked. She's lazy.
So, looks like once I get her trained, I'll be deciding between breeding, rescue, and BLM. Of course, if I get my sister a horse before then I guess I technically wouldn't need to get another one because she'd have company. But you never know. And I wouldn't be above just rescuing a companion horse either. I've got room, time, and money, so I'm all set to have a couple of good horses. I wish I could get more of my family into riding.