Was it his house? If it was his house where they were having dinner then she shouldn't have touched the last peice of chicken. If it wasn't his house then he is out of line.
As it was written, they did not mention whether it was his home or he may have visited a home of a family member. The issue is, that the disabled woman was a helpless victim not capable of defending herself. For someone to attack a defenseless person, is just outright cowardly. Had that been me and non-disabled, that man would have gotten several blows to the body with a meat cleaver.