Doubt was always a silly thing to Draco. Doubt was something you shouldn't deal with, especially not when it concerned someone who could hurt you. Someone who could hurt you extremely easily and wouldn't let you forget it till the merciful moment you die.
The few pictures that Teddy Lupin has are little comfort to him and surrounded by others' loving Families during Christmas he wishes he had his own, but Victoire is determined not to let her best friend feel alone.