Well, I would tell you that she is probably not use to having you around. I use to travel allot with my job. I mean allot, I was only home on weekends and really only Saturday. I noticed the longer I was on the road the more distant she seemed. The reason was simple it wasn't that she didn't love me anymore it was life went on. She was having to make decisions with out me. I actually resigned from that job just because she was more important. My advise to you is to find out if there is a spark left to kindle. If there is do whatever you have to do in order to save the relationship, if there isn't a spark left, keeper as a friend and move on. Either way you need to sit her down and open up. You need the truth, regardless of how much the truth may hurt.