I would agree that some horses go sore at the touch of a rasp, I have had horses like that, where a simple, normal trim would send them lame if you went one rasp too far, but I don't think that is the case here, these feet have been mangled!!
For a start the angles are completely different, for no discernible reason, between the front and the back.
The front right, as Milo has said, is completely wrong.
Why do farriers do this??
It seems to be a common failing in the horse world at large that they just lose their marbles when it comes to dealing with Minis.
I have had a respected Judge say to me, in the ring "How do I judge these little ones?" (I was the steward) and I had to think of something polite to say, very quickly.
They Are HORSES it is not rocket science, if you can pare a barefoot big horses (and a lot of farriers can't, BTW) then you can pare a barefoot Mini.
My Farrier taught me, in self defense of his back, forty years ago, and I have been going ever since. Some grow too much heel, some grow too much toe, this is normal throughout the equine world, it is not confined to Minis.
Vets too, just lose it. I heard my Vet say to a student who came with him to geld, "These little ones take twice as much sedative as the big ones...." He only got that far before I was tersely correcting him (I also changed my Vet pretty quickly!)
If you can get hold of Cornucrescine, use it, it works, it really does, it will help grow the hoof in much shorter time, and you will also have lovely nails!!!!
I do hope your little one is back to normal soon, I would really be looking for a new farrier.....