No, no, no!
I still do work for my Dad, which is fine. We agreed from the beginning that I was just another vendor, not his child.
Mom tried the whole 'family discount' thing, and working with her was a NIGHTMARE! I ended up setting up her QB file, giving her a copy of my book, and telling her she was on her own from then on without ever receiving a dime in return.
I also refuse to work with friends - the quickest way to END a friendship!