Who was to blame according to the woman?

M: Gosh, there’s a lot of damage here.
W: Yes. The man in the green car came out of that side street without indicating and ran straight into the red car that was just turning in. It was all his fault.
M: Oh, I’m not sure. I think the red car was going too fast. Otherwise it would have stopped in time.
W: Anyway, how did the school bus and the lorry get mixed up in this?
M: The bus was coming up behind the red car and it had to brake suddenly to avoid it. So it spun out into the path of the lorry. I didn’t see the actual smash because of the van parked there in the way. I don’t think anyone is hurt though, thank goodness.
W: Here come the police. Look, the children are fine. They’re enjoying the adventure.
M: Of course they are! Thanks to this they’ll be having a day off school!