User blog comment:Melonballmel/Blake MIA or so we thought..../@comment-23784953-20130810002405

What do you mean she's not in the episode? She was the credits background!

In all seriousness, I'd say it's possible that since Blake doesn't have a relevant role in this episode, she doesn't get highlighted.

It's like Pyrrha suddenly being highlighted in episode 3 when she became relevant.