User blog comment:Darkcloud1111/Good Idea, Bad Idea~Field Trip/@comment-24994749-20140930044517

The Velvet thing, given it was Blake who walked first to her... Maybe after Blake opened up about her faunus status to team RWBY and JNPR she also eventually opened up to Velvet. It wouldn't be strange to think Blake would want to have at least another faunus in addition to Sun she can talk with, particularly when you think Sun is a foreigner who will eventually return to his Kingdom. Also, Velvet shares Blake's experience of suffering discrimination over her status as a faunus, something Sun didn't seem to, and while Blake can't precisely speak about her past to her, at least Velvet is someone who can support the reason Blake presents for posing as a human.

RWBY picked up the task of organizing the dance when CVFY couldn't so maybe they have a senpai thing going and CVFY has been mentoring RWBY.