Board Thread:Questions and Answers/@comment-30303676-20161023153004/@comment-28895263-20161024035434

Whatever else they may be, the Guild of the Faceless Men is an assassins guild. They're supposed to be very good, and very expensive.

It's not clear how the junior actress would have been able to afford the "hit" on Lady Crane. Nor is it clear how any widow could afford the "hit" on the insurance man (thin man that Arya was supposed to kill.)

''Perhaps there's a sliding rate scale; adjusted for ability to pay. Hey, it's a service sector business''.

Arya was training to become a Faceless Man: an anonymous assassin. No One. When she went after Meryn Trant, she wasn't No One. She was very definitely Arya Stark. That's why she was blinded.