Family had a long, sad day at funeral of close family member. Day included battling both sides of London rush hour with 3 year old and 6 year old. Pizza restaurant on way home seems like good idea.
While waiting for food, 3 year old is violently ill in corridor between tables. Parents decide one will walk 5 minutes home, fetch car, and come back to pick up family and food.
While Parent 2 pays bill, Parent 1 pulls up in illegal parking space nearby. Parent 2, in restaurant but able to see Parent 1 calls Parent 1 and asks for help getting children, bags and food out of restaurant, and for cash to tip staff who have just cleaned up vomit. Bill has already been paid by card. A legal parking space is across the street.
Parent 2, gathering bags and digging for change, looks out window to see Parent 1 rushing back to car with 6 year old, carrying food. Suddenly 3 year old comes into view behind them, running along with restaurant worker by child's side.
Parent 2 quickly follows, whilst apologising to staff for having to chase after child and the broader vomit issue.
Parents, now both in car, immediately blame each other for bad situation. Parent 1 is furious that Parent 2 wasn't minding 3 year old to see child running after Parent 1 out of restaurant. Parent 2 is livid that there was no communication or handover, after having asked by phone for help, and intending to walk out door together.
How best to apportion blame?