Talk:Through a Glass, Darkly/@comment-25556607-20141221113841/@comment-25584522-20141221120229

Actually, I noticed that neither Mona or Melissa explicitly said that she (=Melissa) was on that train.

In episode 4X01 Mona says "Your sister" and looks at Spencer and Hanna, and the Liars immediately assume she was referring to Melissa (since the only sister of Hanna that we know of is Kate, and she has no connection to -A, so far), while in episode 4X04 at the lake, Melissa never fully admitted that she was the Queen of Hearts.

If you ask me? I think Mona didn't lie. She was talking to Hanna, and she was referring to either Kate (unlikely, though) or Hanna's twin (still speculated). Why she remained silent after that - well I don't know. Maybe because right after that they saw those little girls with the dolls, and she forgot? Idk...