My mother-in-law asked me to help her wash her smelly socks!

I think your mother-in-law has gone a little too far. We can wash coats and things like that, but we can't order others to do socks and things like that. If we are volunteers, that's fine. If we order socks to wash, it will be a bit bullying. Give her some color, or make a hole, and every time, she will let you wash it with distress. . . Think of yourself as an outsider. . . This mother-in-law is a bit ridiculous.