Great pictures by the way! Sighting across the hoof & sole, and on an angle from heel to toe is also helpful, to get a better idea of depth. Pics of the hoof on the ground, squarely from side & front on, with the fetlock included, or even whole leg if there's some structural imbalance, will better show the whys & wherefores of hoof balance too.
Cherrij, you'd love to see some jobs I see in person around here then! I wish someone would hypnotise me to not look below the knees of horses I wasn't responsible for, because that looks like an A grade job compared to some newly trimmed ones... I've worked on horse properties when other farriers are also there & itched to be able to give those horses a GOOD trim when they're done! I am *guessing*(just because it fits the belief/trim of lots I've known) this is a farrier who believes in 'standing the horse up' & so is trying to make the horse grow higher heels, and who thinks horses should be peripherally loaded on their walls, so is afraid to trim the walls more, despite them being full of crud.
You don't say how long you've been in the hot, wet environment & how long this farrier has been tending the horse OP? Those things will both have a bearing on your horse and also on any judgement about the farrier.
Biggest thing I see is that the heels & bars have been allowed to overgrow significantly. The flares are likely happening because of that. And there appears a lot of 'seedy toe/WLD'. That needs cleaning up/cutting out too, as well as treating topically - if you're not, I'd start doing so, with a strong broad spectrum antiseptic. Without it(esp the toe crack) being cleaned out properly by a competent farrier, it will be hard/impossible for topical treatment to be really effective, but it will hopefully at least avoid it getting much worse in the meantime.
More specific info about the horse's management, diet, lameness, etc would help give the whole picture. Is she ridden bare or booted? What sort of riding? How is she managed/kept? Has she been paddock lame since the farrier or only when worked or on hard ground or such? Her soles do look likely thin, and the separation & crack could potentially be causing pain, if it's infected/damaged into live tissue.
Thank you for complementing my photos. I can get some more if needed too. I've been down in Texas for about two years now, with this horse being here about the same time. She was bought and transported from Pennsylvania, which is a much different environment for sure. When she came down here, her hooves were pretty much the same as they are right now (under run, tons of wall, sitting back on heels). I've gone through three farriers now to try to get her hooves to a somewhat "normal" conformation. I have used this farrier two times now, since our last farrier couldn't (or wouldn't) show up to do the trims. I took a farrier course when I was in college (about 12 years ago), but I'm not confident (at all) in trimming my horses at this time.
As for how she is kept, she is typically ridden barefoot. She is currently being ridden/ trained for reining and is stalled at night with grass turnout all day. She's been paddock lame since the farrier and this lameness has come and gone for the past two weeks. Her soles are thin and I've been treating her with Durasole to try to get them to callous up. I am worried about the crack and separation of the wall as I know little stones are getting in there and every day I'm cleaning it out extensively to try to keep any infection from starting/spreading.
It's frustrating trying to get her hooves on track, especially when we have a lack of "good" farriers here.