I really like Athena for a girl.
The only thing that's putting me off is it's really hard to find a middle name that flows nicely.
Other names I love are Summer, Matilda and Violet. As much as I love Rose everyone has the middle name Rose.
I tend to use my children's first and second names most of the time.... As I think middle names should be used if you give them.
The middle name struggle is starting to put me off using Athena.