Mum (Attack of the Graske)

The mum of a family was abducted by a Graske, and replaced by a Changeling on Christmas Day, 2006. The Doctor replaced the Changeling with the real mum, with some help of the viewer, and the Christmas went on happily. (DW: Attack of the Graske)

ALTERNATE ENDING
When the viewer fails to save Christmas, by freezing time, the mum is still possessed by the Changeling, resulting in one of the kids going to her room crying after saying the words: "Christmas is ruined!".