Colden slaps at Alpha again, but in his rage he is flailing at her, and she is able to sidestep the blow. However, he is a warrior through and through, and lashes out with his rapier! As he drives his sword in, he feels the shriek of feedback in his brain. He's ready for it this time...and his rapier sinks into Alpha's body.
He hears a cold voice in his mind. So this is pain.
And just like that, he FEELS the pain, as if his sword was in his own body! More even, worse, the chemical howls of the tiny animals that make up his flesh, the gush of vital fluids...the wound is not simply hurting in his mind, but is being dissected! Every sensation catalogued and analyzed. Continually re-examined, re-lived...and he is dragged through it over and over, experiencing it anew each time!
And then it ends, at last.
Her yellow eyes are still on him, and red stains through the armor she so awkwardly wears, and pools on the floor under her.
With visible effort, she gets back to her feet.
And then the talons are back, striking at whatever's left of his mind.
(Psychic Backlash again! However, even with disadvantage (the lesser of your two rolls is 14), you manage to hit her! This means you take [roll0] psychic damage from the backlash. This uses the last of her psi points. She then Mind Thrusts again; Int save DC 13 or take [roll1] damage!)