Sounds to me like you took unnecessary risks, especially with a child along.
I’m in northern Alberta, and if this happened to me, I would not hesitate, I would fill the moose with .308 from a semi auto.
What unnecessary risks are you talking about? Wife had a .280 Improved, I had a .375 Ouch and Ouch. If the moose came for us, he would pay dearly. Just because he was following didn’t mean he needed to die, obviously, since we made our escape.