When we first moved here a few months ago, there were small groups of does who would jump the fence, graze in the backyard and move on. For several days now, there has been a solitary doe in the yard who doesn't seem to want to leave. She grazes for a while, eats branches and twigs, and then beds down in the corner for quick naps but always wary. I fear that maybe her little herd has been shot or otherwise killed and she is all alone now. I could chase her away but she seems to feel secure here. Any ideas what to do?