Self defense? Aggravated assault? Hey, these things happen -- all the damn time:

MURFREESBORO, Tenn. - A baby caught in the crossfire is recovering after she was accidentally shot by her own mother.

Late Sunday night, Murfreeboro police came to a downtown apartment complex after receiving a report of a shot fired.

They arrived to find a woman inside with a 9mm handgun.

Police believe she pulled it out during a heated argument with her boyfriend -- the father of her daughter.

"The two were involved in a verbal and then physical confrontation with the use of deadly force," said Kyle Evans with the Murfreesboro Police Dept.

Police said the woman fired a single round at her boyfriend and in a bizarre twist the same bullet hit both the child and her father.

The police incident report showed the bullet hit the boyfriend in the groin then traveled through him and struck their one-year-old child, who was sitting several yards away, in the rear-end.

"It's the innocent survivors that get hurt that really get your heartstrings going," said Kim Reynolds, a domestic abuse counselor in Murfreesboro.

The question now: Did the girlfriend shoot in self-defense?

"Was she fighting back? Was he an abuser?" asked Reynolds, who is not investigating the case.

Whatever the reason for the gunfire inside this apartment, it left a small child injured.