A woman accused of killing a New Brunswick teenager is due in court today to enter a plea on a separate assault charge.

Marissa Shephard is accused of assaulting a correctional officer last July while in custody at the New Brunswick Women's Correctional Centre in Miramichi.

Shephard is in jail on a first-degree murder charge in the death of 18-year-old Baylee Wylie, whose body was found in a burned-out triplex in Moncton in December 2015.

Devin Morningstar was convicted of first-degree murder last November, while Tyler Noel is awaiting trial on the same charge.