(WARNING: SPOILERS)
Not at all! Uh, okay, let's see...For both of them you'll probably need to start Mia's path from the very beginning (from the bus stop) and leave the note in the cell. (If you've got the right note, Freya will mention a trap, but if you already have Lucas' end you should be fine. If not, try to remember any other place you've seen that symbol.) From there follow the usual Hopeless end steps and you should get Claire's end.
As for Miowen, which key were you missing?