From Test of Twins by Margaret Weis & Tracy Hickman (but this time I don't feel like Raistlin)
Raistlin drew closer. Kneeling down upon the still-warm ashes, he turned the figure over.
"Crysania," he murmured.
"Raistlin?" Her face was horribly burned, sightless eyes stared into the emptiness around her, she reached out a hand that was little more than a blackened claw. "Raistlin?" She moaned in agony.
His hand closed over hers. "I can't see!" she whimpered. "All is darkness! Is that you?"
"Yes," he said.
"Raistlin, I've failed-"
"No, Crysania, you have not," he said, his voice cool and even. "I am unharmed. My magic is strong now, stronger than it has ever been before in any of the times I have lived. I will go forward, now, and defeat the Dark Queen."
The cracked and blistered lips parted in a smile. The hand holding Raistlin's tightened its feeble grasp. "Then my prayers have been granted." She choked, a spasm of pain twisted her body. When she could draw breath, she whispered something. Raistlin bent close to hear. "I am dying, Raistlin. I am weakened past endurance. Soon, Paladine will take me to him. Stay with me, Raistlin. Stay with me while I die. . . ."
Raistlin gazed down at the remains of the wretched woman before him. Holding her hand, he had a sudden vision of her as he had seen her in the forest near Caergoth the one time he had come close to losing control and making her his own-her white skin, her silken hair, her shining eyes. He remembered the love in those eyes, he remembered holding her close in his arms, he remembered kissing the smooth skin....
One by one, Raistlin burned those memories in his mind, setting fire to them with his magic, watching them turn to ash and blow away in smoke.
Reaching out his other hand, he freed himself from her clinging grasp.
"Raistlin!" she cried, her hand clutching out at the empty air in terror.
"You have served my purpose, Revered Daughter," Raistlin said, his voice as smooth and cold as the silver blade of the dagger he wore at his wrist. "Time presses. Even now come those to the Portal at Palanthas who will try to stop me. I must challenge the Queen, fight my final battle with her minions. Then, when I have won, I must return to the Portal and enter it before anyone has a chance to stop me."
"Raistlin, don't leave me! Please don't leave me alone in the darkness!"
Leaning upon the Staff of Magius, which now gleamed with a bright, radiant light, Raistlin rose to his feet. "Farewell, Revered Daughter," he said in a soft, hissing whisper. "I need you no longer."