They arrived in a small shed near the school and crept out- the Doctor having given up on telling Jethro to wait in the TARDIS.
"How about I go into the school and make sure the students are all right and you can do whatever the hell it is you do?" Jethro offered.
"That sounds like the closest thing to a plan we've got."
Jethro watched the Doctor walk away, her brown hair swinging behind her, unable to fathom that this might be the last time he would ever see her. Would he even remember her? Would he be transported to his life the way it was before he ran away with her? Or would he remember, would he be doomed to spend the rest of his life- wherever that would be- knowing that he couldn't save the Doctor and now she was gone forever? He couldn't decide which was worse.
As she disappeared from view, he pictured her face in his mind, pictured the adventures they'd had, and held the memories close as he turned and walked away, imagining a life like the one this human Doctor was living, where he remembered their story only in his dreams.
Baines and Jenny (the schoolboy and maid whose bodies had been possessed by Son of Mine and Mother of Mine) were standing at the entrance to the school with their army of scarecrows standing behind them. "I sense the Doctor," said Son of Mine. "He is close. The scent is faint, but he is- but Mother of Mine, do you smell what I do?"
Mother of Mine said, "I smell the Doctor. He is strong. He is... behind us?"
They turned around just in time to see one of the scarecrows pull off its "face" to reveal a teenage girl with brown hair, who shoved through the crowd and jumped over Son of Mine and Mother of Mine's heads yelling, "Oi! Time Lord coming through!"
The Doctor ran through the school until finally finding Tim Latimer, the boy with the stopwatch, hidden in a corner. She crouched down to face him. "Tim," she said softly, "you need to give that watch to John Smith."
Tim looked at her. "But I have to keep it safe. You don't understand!"
"I'd say I understand better than you. See, when he dies, he doesn't die. He changes, his form changes. You can understand that, can't you?" Tim nodded, and the Doctor smiled. "Good. I'm him. From the future. I remember everything that has happened here today and everything that will happen. But someone is changing it, so I need to come here and fix it or I'll die and you'll die and everyone else here will die. And you need to give him that stopwatch."
Tim looked at her. "No," he said. "I don't even know if you're telling the truth, and besides, you're a girl. Seventeen, I'd guess."
She looked at him, and he saw that her eyes had lost their softness.
"I am the Doctor," she said. "I am two thousand seventy-four years old. I saw your Earth form. I watched as the creatures that would someday be humans first crawl out of the depths of the ocean. I have brought down empires and saved billions. I've burned up stars, just to say goodbye. I've watched civilizations fall. I've seen the universe, and it is beautiful and dangerous and powerful and everlasting. I've saved you humans so, so many times. I am the last of the Time Lords. I defeated the Daleks. I am the Oncoming Storm, and I will not be stopped by a stubborn schoolboy."
Tim looked at her and said, "I'll give it to him when I see him."
"Good boy."
The Doctor sat in an empty room, tapping her fingers on the arm of her chair. Battlefield jitters. She had no idea what to do. At that moment, she saw outside her window Father Mine and about ten scarecrows dragging a TARDIS out in front of the school.
She heard Father Mine taunting the other Doctor, but what she focused on was the TARDIS. And it was wrong. The light at the top, the width of the box. The Tenth Doctor's TARDIS had never looked like that. But hers did. She ran outside, into the forest where she knew her past self was hiding. She came up behind him, Martha, and the matron and sat down behind them with her face between the Doctor's and Martha's.
"Hello," she said. "I'm the Doctor. From the future. But never mind that, just don't go into that TARDIS."
"I know, it's guarded by the scarecrows," Martha said. "But you're not the Doctor, this is the Doctor."
"Martha Jones, you left me. You haven't done it yet but you will. And I forgave you. But I am NOT going to deal with this right now, especially not from you! Now, that TARDIS isn't your TARDIS, it's mine. So if you go in there, you'll rip a hole in time and that would be bad. Just thought I'd throw that out there."
After Martha, the matron, and the other Doctor left for Cartwright Cottage, a place where they figured they'd be safe, the Doctor waited around for a minute, hoping that Jethro would show up. She'd figured that he had left the school, but had no idea where he was, and she was getting a bit worried. But it was Tim Latimer who came running toward her, flushed and out of breath. "Where's the Doctor?" he asked. "Cartwright Cottage," she said. "I'll come with you." So she followed him, glancing back every second or so, hoping that Jethro would appear there.