I've gone back and read that FB post of his 3 times. Just scratching my head.
Driving lessons. Check.
Minor accident?
TM goes home and gets BM to go with her to "go back to the Sean of the minor car accident." No mention of BM getting his gun. No reason offered for why they would go back to the Sean (sic) of a minor car accident.
Then, on their way home from visiting the Sean, they weren't in a car chase. They didn't "find" the silver car. No, they were "ambushed" -- by two suspects who shot at them 17 times.
They got away & went home. The ambushers followed them and shot TM as she was trying to get into the house.
After BM saw his mother shot in the head, he returned fire.