Was it a Fluke?

Today I was holding Marley after I fed her and she was talking! I held my hand up in front of her and wiggled my fingers and said give me 5! She looked at my hand and then at me and back at my hand. She lifted her hand up and planted it square in mine! I looked around to see if anyone else had seen it too and sure enough my mom had been watching. My first thought was no way and then my second was try it again! So that is exactly what I did! And she did it again. And again. And again. I am sure she did not know what "give me 5" meant but she sure knew what to do when I held my hand up!