Older, Retired, Horse. What To Do?

So, here's the stats on this mare:

Age:29
Breed: Arabian
Status: Retired, Not Able to carry a rider

So, as you can see, my mare is very old, and is getting more and more aged every day. I can't ride her, and my other mare is suffering because we board at a stable with an outdoor only arena. It constantly rains here during these months, and I would like to move to a stable where it is inside, but we can't afford to board two horses. The older mare always trips, while she's walking and everything. She's done it the whole 4 years I've had her, but its gotten progressively worse. I didn't think anything of it until now, and I was actually injured a few weeks ago because of it.

I was riding her, seeing as this was before the vet told us there's no more riding her, and we were at a nice English trot. She was doing well, and then I asked for a lope. She picked it up, and we went for about a lap. Then she fell. She stumbled, and tripped, doing a front flip, I'd rolled out of the way, but not enough, she landed on my ankle. I couldn't put weight on it for about three weeks, until now.

I would like to find her foals, as I would really enjoy seeing if there was any stallions related to her that I could breed my other mare to, the breeding and foaling would be a senior project, and the foal to go away to college with.

Would it be worth it to contact the owners of her foals?

Here's a link to her bloodlines, they're quite impressive in my humble opinion:
http://www.allbreedpedigree.com/sanattu

So, now back to my original question.

What do you do with a horse that can't be a pasture buddy, as she's aggressive, and can't ride?

I'm not sure I fully understand what your saying but I think your saying that you board at a place that is a pasture setting with no covered area? I think the older mare would be happy in a pasture with a covered area that she could seek for shelter. Usually pastuer board places aren't too expensive. Maybe then you could afford to pasture board her and move your other horse to a stall setting. That way she can eat grass and relax all day even if she is by herself, but you should try to groom her and pay her some attention on a regular basis. You should try to make her next years as comfortable as possible.

Find another place to board her where she can live out the rest of her days out to pasture, even if she prefers to be alone. She may not feel well, and I can only hope that your vet would tell you if anything is wrong with her, other than old age. (She is probably cranky) You can't sell her in her condition and I can't think of anything else other to do. If you live in a very cold climate then she would need a shelter, but horses are quite happy being outside, even in bad weather. She probably doesn't have too much longer to live so that is what I suggest. Good luck.

If your really attached to her I would say keep her in the pasture with you, because then at least you know shes safe and happy and can have her last days in peace. But you could donate her to a camp. Kids could practice grooming and learning horse parts on her. Otherwise their are adoption programs all over the country that take horses, like Habitat for Horses. Hope this helps!

Hmm if you cant afford to keep her, she cant be ridden, she cant be a pature buddy, she is aggressive and she has a medical issue.
To be honest there is only one thing you can do. If you cant keep her then have her Put to sleep.
Dont try and pass her on as the only way is down for her. You want to control her future give her a dignified and peaceful end rather then risk her ending up on a terrifying journey to mexico and a horrific end.
When you bought her you took responsibility for her life and as such you also took responsibility for her death. however hard it is it is your responsibility to do everything within your power to ensure she does not suffer.

please keep the horse until it dies....should someone else get the horse, they will probably not take care of it.

honestly, i think the best thing to do is put her down. if you feel like you cant then try to find somewhere cheap you can keep her with lots of grass so that you wont have to spend too much money on food and keep her there until she dies.

i have 3 older horses that were very good in their time...jewel is 36 and has arthritis and cant be rode except by grandchildren, buck is 33 and fred is 41...i keep mine in our pasture and just keep loving them.. i spoil them everyday with treats because 1 day they wont be here and they were very good horses at 1 time.( STILL ARE) you might could find someone to take the horse.. i live in florida and here we have retirement homes for animals ..they will take them to keep from putting them down..you could check with humane society about them

I put my older TB gelding to sleep last summer... he was 17 years old, had been unrideable for 2 years (he had stifle problems) and suddenly couldn't walk from his stall to the pasture anymore... we let him go.

Before I had to make the decision to put him down I had looked into finding him a retirement home. There are several rescues around here that will take in an elderly horse, and find someone that just wants a pasture horse to play with.

If your mare has good ground manners you could find someone that just wants a horse to stand around a pasture and be groomed once in a while. If you do give the mare away, MAKE SURE to get a contract that states if they ever decide to get rid of her that she comes back to you and they are not permitted to sell or give her away to anyone else.

If you can't find her a retirement home, the best thing for her may be to be put to sleep. At 29 years old, she's had a long life already.