A Merrimack County jury convicted a Pembroke woman Thursday of using a stun gun on a pregnant woman during a road rage incident, the county prosecutor said.

Carissa Williams, 23, was convicted of felony Class B assault and three misdemeanors: simple assault, criminal trespassing and endangering the welfare of a child.

“(The victim) was saying ‘I'm pregnant, I'm pregnant,' and she Tased her,” said County Attorney Scott W. Murray.

The incident took place March 7, 2011, on the Exit 14 exit ramp of Interstate 93. Miles back in Pembroke, Williams had pulled up to the victim – Corinne Leclair-Holler — complained about her driving and started throwing items at Leclair-Holler's car.

At the ramp, Williams exited her car, kicked a side window of Leclair-Holler's car, opened the back door and blasted Leclair-Holler in the upper left thigh with the stun gun, Murray said.

Leclair-Holler was 10 weeks pregnant; her unborn child was unharmed. Williams left her own 6-month-old daughter in the car, which resulted in the endangering conviction.

Murray asked for a pre-sentencing investigation, noting that Williams has lived in four states. Williams was out on bail at the time of the assault, so she faces enhanced penalties, Murray said.

The indictment on a felony assault for use of a stun gun was contested by public defenders, and Murray acknowledged they could try to appeal it.

Use of a gun or a knife on a victim often results in a felony assault charge because they are deadly weapons. But New Hampshire law does not recognize a stun gun as a deadly weapon.

Murray said he brought the felony charge under a provision in the assault statute that allows a felony charge if the assailant shows an extreme indifference to the value of human life.

Murray said that included the fact Leclair-Holler was pregnant and that Williams invaded her car.

“It (the felony charge) is not just because she was pregnant; it's the circumstances,” Murray said.