I know the area - there's a lot of road works going on at the mo. My other half goes that way most days.
It's normally a quiet stretch - mainly buses heading off to a bus only route - and cars going to a couple of car parks. The last time I was down there the other week, it was still temporary lights controlling a single lane - but this was right next to a cut through that cyclists use. Of course, I'm not implying that's what happened, but it's very confusing around there.
Hope she's not in a too serious condition.