The Doctor knew in his gut that he had to let Rose go. There was no other way. The void stuff she had on her would surely suck her into the void along with the Daleks and Cybermen if she remained behind. His two hearts constricted painfully in his chest as he forced himself to grow cold inside. Loneliness began to make his insides shiver, a part of him knowing that he was a fool for letting himself get carried away with Rose. Yet he'd rather know that she was alive and well then dead because of him. He would do anything in his power to save her, even if it meant never seeing her again. Never be with her again.
He tried not to be so cold when he told her that she had to go into 'Pete's World.' "We should call it that," he joked, pointing to Pete Tyler. Rose was not amused, still reeling from what he said. At that moment they hear the voice of a Dalek transmit through the speaker of the lab top. "Find Eve! Destroy her! Destroy her!"
"Who's Eve?" Jackie asked. "Who they looking for?"
Mickey turned to see Rose. She stared at him with huge eyes, feeling at a loss for words.
"Where did that come from?" the Doctor asked, his brows furrowing in wonder. "Who is Eve?"
"That's what they called Rose," Mickey said, still looking at her. "Before you came in to get us Doctor. Tell him Rose."
"It doesn't matter," she said, a desperation in her voice. She tried to think clearly. "Please, Doctor, don't send me away."
"I'm not going!" Jackie chimed in. She refused to go anywhere without her daughter, even when Pete tried to reason with her. "I'm not leaving her!" she insisted.
"Eve?" the Doctor asked Rose, his mind trying to remember anything in the Dalek home world about an Eve. He walked up to Rose, his hand daring to caress her cheek. "You didn't seem surprised, Rose. Why is that?"
Rose's eyes were brimming with tears. "Doctor," she began. "The Face of Boe said…"
"What does the Face of Boe have anything to do with this?" the Doctor asked. "When did you see him?"
"It was a dream," Rose said. "I didn't think much of it, but there have been signs."
"Signs?" asked the Doctor, feeling as though Rose lied to him in some way. "Why didn't you tell me? Why?"
"I just…" Rose's voice trailed off, seeing the hurt in the Doctor's eyes. Everyone else was watching them, waiting for what would happen next.
At that moment they heard a commotion outside. The Cybermen were fast approaching Torchwood tower. They would be upon them any minute, as well as the Daleks.
"We haven't got time!" the Doctor said, breaking his contact with Rose. "All of you must go! Now!"
"No!" Rose insisted. "I'm not going to leave you!" She turned to her mother and tried to explain why she wanted to stay with the Doctor. Why her staying with him was so important. She suddenly saw it with clarity. She suddenly knew why she needed to stay with him. Her mind began to buzz. With every breath she took she felt it. She knew now what the Face of Bo meant! That's when she felt the Doctor put something around her and she saw herself appear in anther place. A different Torchwood than the one from before. A Torchwood where the Doctor never existed.
"Oh, no you don't!" she said. "You won't do this to me again!"
So she went back, much to her mother's dismay. She went back and in the process she not only lost her heart, but her very soul as well.