<human>: Give me a shortened version of the text

Using a throwaway because people know my normal UN.

Any way!
My GF and I have been together 9 months, she is not usually an affectionate person due to a past relationship but she is slowly getting over that and recently told me (while she was away) that all her "walls" were down and she wasn't guarded anymore, and was feeling much more affectionate and open with me.

She recently she went away for 6 weeks to Europe. The first few weeks went really well and we spoke as often as we could and she seemed to miss me a lot and was super affectionate it sort of waves, which I wasn't fully expecting but it was rather nice.
She has now been gone about 3 weeks and recently seems to have changed and I don't exactly know why.
Last week she was still being very affectionate and talking to me a lot and was telling me great things like how much she missed me, how she couldn't wait to be home to me etc.

Come Monday morning that seems to have changed. She seems to be withholding affection a lot more from me now, however we are still talking close to every day. I tried to talk to her about it as I wasn't sure what was going on, and she said she was just being her normal self and didn't think anything was different in what she was saying or doing, but it just FELT different. I know she has been a lot busier the past couple days and been making friends and stuff while out and about, it just felt off.
I called her yesterday as well and on the phone she started making jokes about what I would have done if I couldn't contact her for 6 weeks, and how it's going to be hard to for the next 3 because of where she is going, and it just felt weird like she was pushing me away.

I am not really sure what I am meant to do in this circumstance.
Am I just over thinking everything and making a big deal? I've spoken to a few friends and they think I need to just relax and giver her some time to be herself I guess.

I am just looking for some advice or something.
<bot>: GF is away, been great first few weeks but all of a sudden seems distant and not as engaged. Withholding affection and confusing me. Not sure what I should do.