How old is Maggie? My only suggestion would be to bring her inside at least at night. I know that you said that she loves being outside, but you also said that for the last three months (since July) she has been fearful and lonesome outside. So maybe bringing her inside at night for some company and security and letting her enjoy herself outside during the day would work. I am not sure that what Maggie needs is noise (radio, ect.) as much as some genuine interaction and with someone she trusts.