Is it time to start calling out bad cyclists?

It's not really dangerous to jump red lights (on a bike).

Oh come on! That depends.

Riding slowly isn't illegal.

Surely you can outpace her and if not then there's no problem

I can outpace her, but having to overtake her multiple times is frustrating. I have no problems with slow cyclists at all. I'm not exactly Chris Hoy myself but if somebody was constantly overtaking me - hell, if they had overtaken me once - and I saw them stopped at lights, I wouldn't push past them, let alone do something illegal to get in front of them and inconvenience them again. And again. And again.