Guardian Angel Or What?

Before I get into this story, I would like to let you know a little about me. I work third shift from 6 at night until 6 in the morning, and have been working at my current job for almost three years now, I am in law enforcement. I have not sent a story for about two years now, but this certain instance has happened twice in one week. I would also like to let you know I am writing this on behalf of my fiancée, this is her experience, I have made suggestions to her, but I am also looking for anyone else's opinion, it may help, I do not know.

My fiancée and I have just bought a house. It is only 11 years old and it is a modular home, and a quick lay out of the house is this, as soon as you walk into the door, the living room is right there, the kitchen is behind the living room, we have a dining room area, then a den, and a short hallway, with four bedrooms off of it and two bathrooms. Then as you go back to the main living room when you first go in, the master bedroom is there.

Last Thursday night, which would have been the 16th of June I was working my shift and my fiancée had gone to bed. It was about 2 o'clock in the morning. She said she had sent me my last email for the night, and looked at where our bathroom door was and she saw a black figure of a woman, she said it very much looked like her when she was in high school, but wasn't sure. She did say the woman looked to be anywhere from 16 years old to 20 years old, looked to be about 5'6" and slender. My fiancée said that she had western wear on, or Mexican wear and that when she looked at the bathroom door she saw the figure appear and the woman looked at her and smiled. We hold our bathroom door open with a heavy box, because we haven't bought a door stopper or anything yet, but she said this spirit, this woman, pushed our bathroom door shut, and it did latch. The whole experience only lasted about 10 seconds. She got up looked around and saw no evidence of anything, except, the box was moved from the door being shut. It took her a while to fall asleep but eventually did. When I got home Friday morning she told me what had happened.

Everything was quiet over the weekend, I was off and we were out of town, but I had to come back to work tonight, June 20th. She said while she was watching, TV. She saw the figure again, but when she looked at it, it ran to our bedroom, and again she went in there and saw nothing. I had called her and she told me what had happened, said she seen it again.

The reason why I have titled this guardian angel or what is because it only appears while I am at work. My fiancée thinks I do not believe her or she is lying or crazy, but I have told her numerous times that I believe her, because I do. It seems weird to me that an apparition only appears while I am at work, and I wonder if it is something that is watching over her while I am gone, or just a spirit making her presence known to my fiancée.

I have suggested we do our own investigation, but my fiancée does not want to. What should we do? What should she do?

Any help in this would be greatly appreciated.