Jessica, spirits will be attracted to people who can see and or hear them and that would be you. As you have pointed out, they are looking for attention. In my opinion there are some great examples of good psychic interaction in shows like "The Haunting of..." with Kim Russo. What I like most about her is that she is love not fear based. So, it may help to review some of the shows along that vein, you can determine for yourself if you think the person is authentic or not and how they rate in interaction with the unseen and gain some of the insight you are looking for.
Sorry to hear that life has given you so many twist and turns. Now you are entering a time where you can make it on your terms instead of the dictates of others. I hope you find life rich and blessed.
When looking at the history of a house, remember that the land area may have some answers too. There could have been a house built and torn down long ago that might hold some answers. How about accidents from the street or road? As Bill smartly mentioned, the girl could have attached herself to you from another location.
It sounds like your community suffers from a way to common element affecting the world today. Lots of religiosity and too little spirituality. Woo to the holier-than-thou mentality.
See if the library records have answers to your search.
much Peace and Love!