Not sure how much I can tell you. I was in at the pub having a drink when Miles Bletchley came out from the back of the pub bellowing like a wounded bull at Rosie before throwing a punch at Seamus Finnigan.
He was yelling something about Rosie being ignorant of the dangers around her and that if she kept that up, she'd be dead. That was when Finnigan tried to intervene and got punched for his troubles. Bletchley said something to Rosie about the pub's clientele and told her to watch herself. He then left with a little boy.
It sure as hell looked like a threat to me but I don't know what they were arguing about.
Just as an unofficial addition - I have no solid proof to substantiate this but I do know that Bletchley is a Death Eater. He's also stupid as a stump. Make of that what you will.