"She put herself in danger", like says every motoring supremacist, negligent factory operator, date-rapist...
Surely if a slow vehicle jumps a red light (and you usually can't be sure, what with how modern traffic lights are shielded so you're not often able to see theirs) and puts themselves in your path, then you stop and handle the overtake as if they were in your path normally. What they did was probably wrong, but that wouldn't justify your wrong.
What would your friend have done if a blue-light vehicle had jumped the red? Even slowing, they'd probably be going at least as fast as the cyclist.
So 4 foot from the kerb? So if the bike's clear of the drains, that's less than 1 foot from the end of the handlebars? Yeah - that ain't enough space, no matter how they got there.