Ok, I've watched the footage of the collision. He's riding at a fair clip, but probably under 20mph, it is hard to judge. He is well, well out from the kerb, at least 6ft out. She steps off the kerb, then absolutely sprints out, straight into him - not in front of him, but looks like she hits his arm/handlebars.
He had no chance at all to avoid the collision, in my judgement.