DS is almost 3, ASD suspected. He doesn't really respond to his name, let alone a simple sentence such as 'come here please' or 'get your shoes'.
I was locking the front door when he dashed to a neighbours house! I think he was attracted to the door because it's red and my mum's similar house door holds a swimming pool behind 
I was a bit annoyed with myself as I ran to collect him from the door, but before I could get there in time the woman shouted ''I'M SELF ISOLATING FOR FUCK SAKE''.
I was mortified, but my brain got stuck. I didn't know if to run after DS into the house or hope and pray he would respond to my pleas for him to come here.
He did on the second desperate attempt, follow my request and came to the door, when I grabbed him. I said '' I'm so so sorry!'' and left.
AIBU to have not prevented this? Am I right in thinking it wasn't really my fault :( He's never tried that sort of thing before.
Told my Mum who said to put a note through the door and apologise that way, so she can digest my words calmy