Thanks for the concern. She has been OLWS tested negative, as well as the stallion. The stallion owner is a coworker. I don't consider myself an irresponsible horse owner, I would never produce a foal that even had the chance of being a lethal white. I've been around in the horse world long enough and did my own homework before just randomly breeding her.
I am a technician for one of the most premiere equine lameness veterinarians and surgeons in the country. That being said (just wanted you to know I have a wealth of resources when it comes to diagnosing and fixing her problem), she doesn't have navicular bone "changes". There are no holes in her navicular bones, there is no evidence of navicular disease. She has a slight (like 0.2) negative palmar angle, therefore she strained her deep flexor by being stupid in the pasture, and was having trouble fully healing it. That was fixed by some rest and wedges. She is currently sound without injections or bute.
I don't think that this will shorten her lifespan, I kind of lol'd at that.
Thanks for you opinion about her faults, that's why I asked.