This may sound sort of silly, but clearly you are trying too hard. It really sounds like you are over-fertilizing. If you added natural compost and also fertilizer you may be burning the roots.
I would have only dug a hole a bit bigger than the rootball and added only just a bit of supplemental soil change. If it were clay I would lean more towards a bit of peat and sand. If it were sandy I would lean a bit more organic (to hold moisture); just enough to change only a few inches around the rootball. The rose will reach through the new pocket of soil and encounter the earth as it normally is. This is the soil the plant will have to deal with over the rest of its lifetime in that particular spot. Then I would have added a bit of mulch on top to keep moisture retention and weed control. I would not of fertilized until the bush is clearly set ( I would say no less than 30 days, even stretching beyond that since this is a new planting).
Typically the soil as it stands should have enough nutrient and minerals to keep a bush alive and healthy without supplementation. After a season it is slowly exhausted and then a regular bi-annual treatment would be in order, and thinking how rich the soil must be in WV I would even go as far to say that once a year fertilization would be adequate for a healthy specimen.
If you are hoping to save this bush you can pull it from the ground and set the rootball in a bucket of water and wash out the excess, then set it back into the ground without the supplements. If it is a specific spot you are hoping to establish this bush then I would recommend a pot for the rest of the summer until fall. The initial burn will be unsightly but after it crisps up and you see how far the branches die back you can prune it way back and the regrowth will overcome the unsightliness in a few months. You might still lose the bush which would be a shame, but from what it sounds like if the bush remains where it is it will perish anyways.
Flush the spot where you planted it well and often to wash away any excess fertilizers while you are deciding what to do; especially if you are going to plant there again.
Wishing you luck.
Let us know how things progress. You might even throw a pack of seeds in the spot for the remainder of the season to wear off anything that could have harmed the rose.
Ron