First video – the overhead close one where you can’t see the actual collision impact – you can see that she doesn’t get touched by the other rider coming through, I think.
The head on view, my interpretation of it is that:
she comes through celebrating no hands,
then realises that the photographers are standing too far out for the size of group coming through (backed up by the organiser or whoever it is trying to herd them back in),
panics and gets hands back on bars as quickly as she can,
which causes her to swerve towards them and exarcerbates the situation…
On another note, the photographers look to be about 20m from the finish line, there’s no way the peloton could safely have slowed down to avoid them considering where they were standing…
Could be wrong, but that’s what I’m seeing! Whatever, it’s nasty stuff, particularly as it causes a domino pile-up for the other riders as well…