^Puck, I agree, nothing's likely to change in her hooves **if management doesn't change.
If the horse is kept cooped up in a stable the majority of time, this I believe is a big part of the problem. If you did very little exercise & only went bare on shagpile, you can bet your soles would stay thin & sensitive too. Possibly diet too. While the rings & flares on her feet aren't major at all, they're constant. If she's overweight or oversensitive, it may need cutting back/changing. Although that Sentinel feed looks very good, nutrition could still be an issue - OP you might want to look into FeedXL or such, to check her nutrition is right for her particular situation/diet & look into 'Magnesium4horses' too.
Good pics OP, but would be better if soles clean
Her feet look pretty good actually, not what I was expecting to see. The left fore looks a little long in the toe and higher heeled. It may need to remain higher heeled than the other, if that's right for her, may always be a bit 'broken forward' at the pastern, toes will always need more attention to prevent 'running forward' but I think they can probably come down a bit & back a bit more. Right heels don't look so high, but could be brought back a bit too. The bars are overgrown/laying over & need to be trimmed substantially. Quarters are stretched all round & appears there may be some separation/infection in some. IMO they need to be trimmed at the ground surface, to sole level, then bevelled back to/near the 'white line' to relieve mechanical stress & allow a strongly connected wall to grow down.
Heels/frogs look pretty good, but will be weak. In ideal situations - think feral arid environment horse - the caudal hoof doesn't *begin* to really develop much before 4yo & in domestic, confined or overly cushy environments, it often never does to the extent that is needed for good function. So if your horse has been seriously confined & only 5yo then she hasn't had a chance to begin developing that 'baby' hoof yet.