Doesn't want me to get ahead of myself yet?

After spending the night with my ex girlfriend and kissing her, she said today she doesn't want me to get ahead of myself yet, I asked what she meant exactly, said like getting the wrong idea.. and that for now we're just friends. She kept all my gifts that I got for her and kept my toothbrush that she gave me as mine to use at her place when we were together. Then said "that should make you feel good", "that I kept a little hope" (not 100% sure on those exact words on the little hope quote but it was close to that)... we talked briefly about boundaries, she said "let's just go with the vibes that day, we're both adults" but now I don't know what to do exactly or what's going through her mind or how she's feeling or anything like that
Doesn't want me to get ahead of myself yet?
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