"So tell me, Jabe, what's a tree like you doing in a place like this?" The Doctor asked Jabe kindly. "Respect for the Earth." This made The Doctor scoff. "Oh, come on. Everyone on this platform's worth zillions." "Well, perhaps it's a case of having to be seen at the right occasions." Jabe said smoothly. "In case your share prices drop? I know you lot. You've got massive forests everywhere, roots everywhere, and there's always money in land." The Doctor explained. "All the same, we respect the Earth as family. So many species evolved from that planet. Mankind is only one. I'm another. My ancestors were transplanted from the planet down below, and I'm a direct descendant of the tropical rainforest." She explained.
 
The Doctor noticed something. "Excuse me." She then scans a door panel marked 'Welcome to Platform One. Guide of Platform One Do You Need Assistance with her sonic screwdriver. A keypad labelled Maintenance log in, then Access denied. She cursed under her breath. Jabe took that as a sign to continue. "And what about your ancestry, Doctor? Perhaps you could tell a story or two. Perhaps a woman only enjoys trouble when there's nothing else left. I scanned you earlier. The metal machine had trouble identifying your species. It refused to admit your existence. And even when it named you, I wouldn't believe it. But it was right. I know where you're from. Forgive me for intruding, but it's remarkable that you even exist. I just wanted to say how sorry I am."

He puts her hand on her arm, and the Doctor puts her hand over his. A tear then drops from her eye. And at that moment, she gets the door open. She quickly wiped the tear away. Before they entered the room.