You'd have to be a terrible person to make your mother cry.
sometimes you may love your mother and you need to tell her things that will make her cry - for her own sake. this is not just your mother, but all people you care for. protecting people from the truth so that you don't have to make them cry is worse in my mind by far...
I meant by doing something to warrant it. Not by showing her some tough love.
Also, excellent answer, Rolex.