I think your suggestions are good, but I also think your friend is using Mom's habits as a copout. I have a messy house and room and desk, but it's not because of my mom. In fact, looking around my parents house and observing them and then watching me, you'd wonder if the hospital sent them home with the wrong baby. Even if your friend's Mom used to do the putting away for her, she still had to observe WHERE things got put away -- clothes go in the dresser or closet. Not thrown on the bed, back of the chair or floor.
It's just up to me whether I make a priority of taking the time to put things away when they belong or.... as my husband likes to say, go into "use and dump" mode.