Let's rock, baby!
Didn't some leaks say she was running an orphanage?
If you want to make a non-combatant into a fighter, you're better off choosing Patty giving her family's magical lineage. Kyrie is fine as a non-combatant.
She doesn't have to be a fighter. Just find some ways of defending herself and the kids. Learn how to use a gun like Nero's Blue Rose.