Broken Trust (Vampire Knight/Diabolik Fanfic Crossover)

Raika Kuran, the younger sister of Yuki, was constantly ignored as if she wasn't there. Her parents didn't like the fact that her eyes reminded them of Rido, nor the fact that her hair color wasn't brown like theirs but, silver. She believed that she could trust Kaname, but all that went down the drain when she heard THE conversation.
It destroyed her from the inside out. But instead of staying and crying about it, she ran away; only to end up with the Sakamaki family. What was Raika hiding from the Kuran family?