Most of the stories in Time Lord Fairy Tales are recognizably cribbed from well known, um, fairy tales. I've read this one is sourced from Rumpelstiltskin, but I don't see the connection.

The story itself makes no sense. Some guy collects tears, and in order to do so, he puts people's loved ones in bottles. And there's a room with the bottles of tears, and a room with the bottles of people. Why does the guy do this? Never explained. When the bottles of tears break, how do they fill the room up so much they drown the guy? Makes no sense. Sometimes fairy tales just don't.

We can just take this as a cautionary tale of "when people offer you something too good to be true, it probably is". If we try to find logic in it, forget it. And if anyone can explain why the Doctor would show up and nudge the heroine without actually giving her information or actively helping himself, well, good on ya, because I just don't see it.

Worth a point for atmosphere, perhaps, and well, it's certainly - as advertised - a fairy tale.