S.B.
Jace for a boy.
Jacey for a girl.
What about Josie for a girl?
Hey, Jessica Simpson named her daughter Maxwell, so I guess anything goes.
There are lots of girls named S..
I guess Jace could work for a girl. It's not far off from Jade.
I've known a couple of girls named Elliot and I actually thought it was cute and suited them.
This day and age, Jace isn't the worst thing a girl could be named.
Just my opinion.
Best wishes.