User blog comment:WeissSchnee/Something I noticed about the Yellow trailer . . ./@comment-10564061-20130607173959

One more thing to add to the other 3 comments. In Weiss' song "Mirror Mirror", she asks "Who is the loneliest of them all?" Then at the very end of the song you hear "I am the lonelist of them all." SO, we can assume that Weiss isn't connected too much in particular to Yang and Ruby, however like one of the comments said below, we saw Weiss' symbol (which was actually a snowflake, not a flower) on the crates in the Blake trailer.