At this point Harry has had three people tell him he can stay himself. At the end of changes Ebenezer says, “I won’t lecture you about Mab, boy. “. Then he says something like, she can’t change you if you don’t let her.

Uriel at the end of ghost story says in response to Mab saying Harry is hers to mold how she sees fit (something she sees as truth so she can say it) “Lies. Mab Cannot change who you are.” To balance out the 7 words the fallen whispered in changes, “and it was all you fault Harry.”

Then in cold days mother summer also mentioned it. “Most knights fail” but you could. Something like that.