I can see how she thought it was clear to go - the white van turns into her road, obscuring the view to her right. She then sees man in black Golf begin to turn after it, thus she thinks the road is still clear to her right. Even if she saw the cyclist approaching the junction - he may have been partly obscured by her 'A' pillar - she must have assumed he was far enough back or the Golf driver wouldn't have been turning, right?
It's the classic 'I can't see anything coming, it must be clear' attitude, rather than the safe/appropiate 'I can see nothing coming. it is clear' - similar to pressing on even though blinded by low sun.
To then hit the guy and keep going is inexecusable. She said later 'I thought I hit the kerb'. Jeez. I realize she was probably in shock, but not once in the ten minutes or so of the clip did she show any concern for the person she nearly maimed. She even said "i'll be late for work' at one point I think.
Hope she gets convicted and suitable sentence.