Registry for an unregistered mare? Or her foal?

I own an absolutely amazing palomino mare with great conformation and a temperament to put pony club horses to shame. She is just under 15 hands, about 6 years old, an until recently I used her as mainly a jumping horse, which she excelled at, but we also dabbled in dressage, western speed, trail, and pretty much everything. She could do it all. I'm speaking in the past tense because last fall she went lame, and was diagnosed with low ringbone. Her jumping days are over, she can now only be used for light riding in the summer when she has shoes on. (Totally my fault, i shouldn't have ever pushed her that hard that early, and i would give just about anythig to go back and undo that...) Since I cannot afford to feed a horse simply to sit in a pasture, and I desperately don't want to sell her (she's my first horse, and I love her :) ) I'm tossing around the idea of breeding her, to sell the foal. She's unregistered, her Dam is an unregistered paint/arab cross, and her sire is a full quarter horse. I would try together her approved as a warmblood broodmare, but I don't know that she'd be accepted as she isn't really the classic warmblood build... At least a hand to short, and she can no longer safely jump. And I definitely don't want to breed her I the baby can't be registered, I will not have my precious pony's baby being sold for meat; never in a million years. Does anyone have any ideas? There's no hope in doing anything with the quarter horse registry, as far as i know, but i'm not sure about anything else. Also, I can't afford big fancy expensive studs... Unfortunately.