SAN ANTONIO -

An argument between a couple ends with a woman stabbing her boyfriend.

It happened Thursday just after 9 p.m. in the 300 block of Army Boulevard.

Police say the couple was arguing, then the woman pulled out a pocket knife and stabbed the man twice in the chest.

He was taken to San Antonio Military Medical Center in critical condition.

The woman -- who has not been publicly identified -- faces charges of family violence and assault with a deadly weapon.