Girl or boy name?

Elizabeth • Mommy of one beautiful girl, and twin boys (:
I already have a boys name picked out. But for a girl, we are having a hard time lol. With my daughter, she was named after my best friends mother. So if I end up having a girl, I have to go through the process of picking a name. 
Cobie. 
I really like this name. Does it sound to boy? Full name would be Cobie Marie. I don't know lol. 

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