Kindly update your brief
Size- ?
any idea in your mind ?
any color preference ?
illustration look or real life photos ?
add some example you like.
thank you.

Idea: Maybe something with scales of justice? The Sisterhood is there to balance the scales.

Color: Something with a splash of red.

Illustration or photos: Not sure.

Also the girl in the first sample is too white. The victim character is Samoan, so at a minimum would have dark hair.

How about lady justice swinging her sword...