Have her change you into your diaper now
From Create Your Own Story
You say she can change you and finish showering and climb out. By now you know what is going to happen and wrap the towel around your waist and go to your room.
Your mom is waiting and soon you are in a diaper once again.
You go out to the living room and Susie is there, "Hi, Susie," you say as mom runs down the list of dos and don'ts. You like Suzie, but it is a bit embarassing to have her babysitting you while you are in an actual diaper.
(Come back later for more story)