So your mum would behave like this woman? Really? Then she should expect to held accountable, if her actions lead to someone death. She should expect people to think she is an awful person If she did this and walked away to finish her shopping while the person died in the road.
AG was probably terrified and couldn’t control herself? Do you understand you are essentially saying she (and your mum) are a danger to the public and can’t stop themselves?
Your mum is absolutely in the wrong to start aggressively approach people and shout at them, because she perceives they might be a danger to her, when they are not. She would be absolutely wrong to leave them dying in the road and carrying on her way.
Your mum’s disability isn’t an excuse to behave like this. Clearly you do need it pointing out. It’s not a justification. And the PA in your post doesn’t make that any different.
My Dp is disabled. My son is. So was my mum. and I would expect them to not behave in this way.
There was no danger to AG. She decided to create the dangerous situation herself, because she perceived it was her right too. It’s really that simple.
What if your mum perceives a teenager as a danger to her? What if AG had done this to a child or a teen? Would you be so sympathetic?
Would love to see some stats on cyclists being allowed to walk away after causing someone’s death.