Ok. To clear things up. I am not in the market to breed. I just thought perhaps for once in her life she might like to raise her own foal and my son could learn about owning a horse from a baby to grown and they could bond to one another. But I think the assumptions made are a bit over-reactive. I am trying to learn something here, not open a foal-mill.
I don't think anyone thought you were opening a foal-mill Shannon, but you must understand, that we can only go by what someone says on these forums and to many of us who do rescue, we always worry when we see someone asking the possible worth of a rescued horse and/or wondering if it could be bred.
According to the age of your son and his experience (and yours) with raising a foal, it doesn't always work out well. Bonding is never a given with any horse. Some do bond with their owners and some never do. Also, animals don't usually 'want' to become mothers. We must not confuse them with human desires. Plus of course, at her age, she might not take, have trouble foaling and possibly lose the baby and even her own life. I have heard of more foals and mares being lost this year, than ever before.
I hope you are able to discover her history. Have you researched her brand on the internet? It would be fun to know her background. Much easier these days with the internet of course. Years ago trying to trace the background of a horse, was incredibly difficult. Do try to post some pics of the mare. I'd love to see her. If indeed she is a Gypsy or Gypsy cross, I might be able to find out something of her background.
I also hope you will start a licensed rescue. We do so need more in S. California. A few years back someone discovered a truly gorgeous ASD, tied in a trailer and left to die. He was in very serious condition when found. We never did track his background, but with the help of several very dedicated rescuers, he was eventually brought back to health and found a very happy, pet home.