<human>: Can you give me a shortened version of the text?

I've been with this girl for almost over a year, and I've learned that she is not much of an outgoing person when it comes to being affectionate. We have a healthy sex-life and she's not afraid to be confident, and whenever I'm affectionate to her(on the street, in public) she doesn't hold back, but she never makes that move to be the first to do anything.  She never goes for a kiss first, it's always me that controls that. I recently came back from a long trip, as did she, and brought back presents, which she kind of just took and laughed and then moved on.  It upset me and I thought that she didn't really think anything of it.  I also wrote her a long note before I left, talking about how much our relationship means to me, and she just kind of said thank you and kept going with her life.  I know that she cares about me, but she does not show any kind of thankfulness or affection towards me to actually show me that she cares about me.  Is this something that I should just take as part of her personality and not try to change, and maybe we're just different in the way that we show our gratitude and affection? Or say something like, "I wish that you would show your appreciation more"?
<bot>: My girlfriend does not show much affection towards me or gratitude for the little things I try to do to make her happy.  Should I take this as a part of her personality, or talk to her about it?