[Oh goodness he's worse than Neville! Hermione gives Credence a friendly, comforting smile.]

It's okay, there's nothing to worry about. Pokemon evolve at various times for a multitude of different reasons - because their body is ready, because they want to, because they're exposed to a certain condition that prompts evolution...its really quite normal.

And see, she's quite content. I'm sure Newt will be extremely happy to know you took such good care of his pokemon that they felt comfortable evolving around you.

[Hermione is trying her best to put him at ease.]