It's not always easy to fall asleep alone, especially not when it's cold outside and everyone else is asleep.
Evelyn is terrified of the dark, if anyone didn't know. This means, she always sleeps with someone or falls asleep in the living room with the Crystals.
Victor isn't afraid of sleeping alone. In fact, he likes alone-time. But there is times where one can be alone for too long and needs some time with others, and when Victor reaches that stage, he usually seeks out Annabelle or Evelyn. Once in a while, they fall asleep in the living room together.
Annabelle isn't really afraid of the dark but she doesn't like being alone for too long. As she often suffers insomnia or has troubles with nightmares, she often sleeps with her brothers. If they're not available, she will seek out Evelyn or Victor.
So the three of them go well as a trio, even when the day is over~Shh, don't wake them!
Evelyn, Victor Sibberiann and Annabelle (c) CloudyCrayon