Myairah Carter admits she killed Rayon Williams in a Pittsburgh barbershop last year.
But she insists it was self-defense, claiming that Williams — who Carter said previously robbed her — approached her as she sat in the barber chair and challenged her to a fight.
While Carter has remained jailed on a single count of criminal homicide since her arrest in October, last week her lawyer filed a motion to have her released to electronic home monitoring pending trial…