SpoilerPersonMan is away for a few days, so I will just have Siel stab again at the snake, so we can roll on. You seem to be, with the exception of Tralkor , on the winning hand.
Nala shows her superior proficiency with the spear as she hits the snake again. It is hurt fairly badly now. Tralkor wriggles free and moves away just after Siel stabs at the serpent slicing well through its armor. The scene is decorated with soft chanting by Vrishchika, who is mustering extraplanar powers to your aid.
The snake sees its victim fleeing, often a sign that dinner time has come. It lunges at the ogre, biting Tralkor for 13 damage. I need another grapple check, Tralkor, DC23 (and you again get a +10 bonus).
You are all up. Siel and Nala, you get to make an attack of opportunity against the snake in addition to your normal attacks, as it darts out of your threatened area.