So basically this is a random page from my comic series that I've been working on. In the timeline it's right before Mazarine is tortured by the enemy knights and the Nightmare King. http://app.sketchclub.com/sketch/10854796
I guess this is Trinity 'Rin' Ravenbane's big debut.
Rin is an ex-witch (she was cursed, losing most of her powers and transforming into the creature you see).
She was tasked by the Nightmare King to kill the prophesied hero (Ryland ofc) and bring him the sword of light. She eventually realizes that she will first have to split up the team, isolating the hero as much as possible.
Despite their conflicts, Mazarine and Prism do deeply care for each other.