[Donna's features become progressively more grave as Surprise stumbles forward through her reassurances.]

I'm not going to burn everything down, okay!

[She can't help the outburst. She really can't, not when Surprise is carrying on like she thinks a bomb's going to go off any moment. Like Donna's going to go off.]

It was an accident and that's why we're fireproofing it! I'll pay to fireproof the whole bloody village if you're that worried!