What does it mean when a girl says "aww thank you!"?

above_quality2015
So basically I was just getting off work and I saw her working I just went up to her and she asked if I'm off and I said yeah and I told her I just came to tell her to have a good night and she says "aww thank you" and she tells me to have a good night and I left did I make the right move or is this the type of move that puts me in the friend zone?
What does it mean when a girl says "aww thank you!"?
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