The only thing I'm concerned about is he didn't go to school for it. Another farrier in the area that I used to use, but quit using him years ago, taught him and then he went and got certified with the Working Farriers Association but since he's the only one I could find we'll give him a shot but if he trims and shoes anything like his teacher I suspect he'll only be out once.
Of course we can all learn more on the subject & the more someone understands the principles the better. So saying, I guess it depends where you go to school as to what you learn & whether it makes you good, bad or indifferent. Here in Oz, farriery is unregulated and I don't know the proportions, but many farriers are not formally schooled. From what I've seen, that doesn't seem to necessarily say anything of their knowledge or skill tho, because they seem to only learn the superficial stuff in the courses anyway & pick up most of their true knowledge out in the field. I've known a few fantastic self taught farriers and some rotten 'professional' ones. That said, your last comment above would make me hesitant. While I don't believe all that call themselves 'barefoot trimmers' are good any more than I think all farriers are bad, if you have a reasonable understanding about it & can find a good 'barefoot' person, that may be best.
I will try to get good pics of her hooves later today. I know there are some problems with them, the right front toes out more than the left, there is more wear on the outside edge of the hoof wall on the fronts, she's flat footed on the fronts which makes her prone to bruising, longish toes in front and thrush that has seemed to stick around all winter because it's been very wet.
Yeah, good pics will help. Toeing out & uneven wear may or may not be due to the trim, but is likely other body issues are contributing at least. Flat footed(make sure you protect her feet when necessary to avoid those bruises & allow her to move properly) & long toes are no doubt part of the prob leading to cracks, thrush, etc. Ensuring she's on a healthy diet & kept a good weight and getting her feet in shape should also get/keep her joints in good shape.