The poor creature. Oh, the terrible, poor creature. He knows as clearly as Becky does that it, she, is afraid. She is so horribly afraid, and the Doctor does not know what to do. There are so many things he can fix, problems that he can solve, but he does not know how to fix this. He tries, oh, how he tries! There is so much fear, always so much fear, and it is the Doctor's job to make it better, and he tries, but sometimes the only thing to be done for fear is accepting that there are things that cannot be changed, cannot be stopped, and he cannot make anyone accept what they refuse to.
And now, as always, when someone refuses to accept, they respond with fury. There is always so much fury. Will they ever stop? Will they ever just listen?
It seems that the answer remains a resounding no. He tries to convince her, tries to make the creature that pretends to be a mall see that everything will be okay, that she will survive without keeping Becky here as a prisoner, but she does not listen. He's not even sure he can blame her. He understands her fear. No matter how much he wishes that she would listen, he does understand the fear of loss.
That doesn't mean that he will stop, though. He will never stop. He will always try to help, will always try to make someone understand that loss is a part of living, even if it never works.
In the silence, he hopes it will. He hopes terribly that the silence will end with acceptance, with the Mall allowing them to go, allowing him to take Becky with him, but of course it doesn't. Instead, he can feel the fear increase. He does not need a Gallifreyan's telepathy to feel it, to know that this is going to get worse. It is still, and it is foul, and it is going to get worse. Only, he doesn't know how. He hates this part, too. The part of knowing that something will go wrong, but not yet knowing how.
And then, at once, he knows. There is a sound, a single dripping of something, and then the floor falls from beneath his feet. He is falling, and he expects to fall far longer than he does, but instead there is a surface. A...slide? Yes. It's a slide. It is surprising, but it does make sense, in a way. That is what he thinks as he falls, in a moment of clarity that does not make a terrible amount of sense.
Of course there's a slide.
And then there's another fall, this time into a pool of--something. No, not something. More plastic. It's a ball pit. The great green slide has deposited them into an underground ball pit. He would laugh if there was anything worth laughing about. If he hadn't found himself lost in a sea of plastic balls. A moment is taken to orient, and then he pushes up, and at once he surfaces. And he hears his name.
He turns, difficult in the sea of plastic, but there she is. She's here. "Over here." He wades to her, a feat far more difficult than he would think. "Are you alright?"