I should put this in my signature, save repeating myself over & over.... The most important thing we can do for our horses is to educate ourselves the best we can on principles & factors of health & soundness, rather than having to take the word of some 'expert' or other blindly. To this ends, with regard to hooves, hoofrehab.com barefoothorse.com & barehoofcare.com are 3 great sites to start with.
Now, with only those few pics to go on, they don't give too much away, but overall they look quite reasonable
, aside from overdue for a trim, especially in the quarters. I would also ensure they are maintained in a strong 'mustang roll' to avoid undue leverage pressure on the walls. They definitely don't need to 'grow out' more - on the contrary, I'd either shorten the trim schedule for your farrier a tad more, or better still, learn to do 'touch up' trims in between his visits, to keep the roll and the quarters under control.
I don't personally get carried away with angles of the rest of the body as they relate to hoof care. It depends on the horse's conformation, how they're standing, etc as to how shoulder angles relate. Eg. The hooves may be 'well trimmed' angle-wise, but heel sensitivity makes a horse stand on it's toes and effects knees & shoulders. Pastern to hoof capsule angles are also transient, depending on how the horse is weighting itself. But this is more relevant as it can show problems. However 'correcting' feet to align with pastern angles is problematic, as it often leads to foundered feet being 'stood up' & such.
It looks *possible* there is some separation there in all feet, tho it's hard to tell & it doesn't look severe, but keeping them maintained as per Marjorie Smith's explanation of a 'white line strategy' trim will help clear that up. Also possible there's slight imbalance there - as someone pointed out, one heel looks a little longer. But I'm by no means sure of that either, just with those pics, and it may be her way of going - the farrier trims her well balanced but she hasn't been using that heel quite as strongly.