It would be impossible for me to write with my daughter, since I don't have one! As for writing with my mother, it might be possible, but only if we could do our work by phone and exchange of drafts. Having the two of us in one house for more than a few days could well be the basis of a murder story -- the only mystery involved is who would be the murderer. We get along fine at a distance and could bounce endless ideas back and forth, so maybe we should try the letter game? Could be fun!