Girlfriend of Trooper Burns' killer in court today

Her boyfriend killed an east Texas DPS Trooper, and today, she was in court.

36 year old Jennifer Petrick pleaded not guilty today to hindering apprehension and prosecution of a known felon.

Back in May, Petrick's boyfriend killed Trooper Scott Burns at Lake O' The Pines.

Robertson took his own life 2 days later.

Cathryn Khalil /