Geez, don't the DNR have better things to do than hassle these people. They would probably take the deer and have it euthenized anyway.
Some of the DNR here in Indiana are real pricks. I'm out in the woods a lot and run into them. They are usually ready to harrass you over anything.
I think the reason the DNR in most states hesitate to give permits to keep fawns, has to do with many people picking up fawns in the woods that they "think" were abandoned.
Young fawns are taught to hide and stay put when young, they are very easy to catch. Most often the doe runs away without being seen, but is close by.
Unless the fawn was in an auto accident( such as seems the case here) its best to leave them alone, or view/photo them from a distance.
I would have issued a rehab permit, but cautioned them to not get to attached to it, once healed it would be turned loose.