I am glad the couple were not hurt, however that young lady must feel really bad considering she just took a life and one more may die. Rightfully so, but it still must be a heavy burden to ear.
She shouldn't. She did something right. If she didn't open fire, it's almost certain something horroific would have happened to her and her boyfriend -- think Willie Horton.
Something else to think about -- if her boyfriend ignored the knocking the thugs would have went to someone else's house and destroyed someone else's life.
That lady is a hero.