ladies advice is greatly appreciated?

My relationship with my ex ended about 3 months ago because I got in trouble at work and people were telling her other things about me that were not true at least thats what she tells me. I am in the army and was on xtra duty for 30 days and still have 13 days of restriction left. While I was on xtra duty I found out she was back with her last boyfriend before me. But during that time she was coming to base and picking up my laundry and bringing me grocerys. Also she is cooking me dinner for Thanksgiving and bringing it to me. in addition we have been talking more on the phone lately to include about 2 hours straight last night, and a few times last week as her B-F was trying to start crap with her about me again accusing me of something I didnt do. I got her a gift card to a day spa for her birthday which is thursday and she said she was going to repay me and I said the only thing I want is the chance to sit down and talk when I can get off base and she agreed to it, but that she is alittle apprehensive. When we talk it is not arguing or anything crazy. I am trying to figure out what is going on between us we talk and laugh when she is here she smiles at me etc.