A.D.
Hi F., I don't have any advice for you but my daughter, now close to forty years old and mother of two (thumbsuckers) admits that she sometimes wakes up and finds her thumb in her mouth. I guess it is comforting. I have 4 sons also and none of them were thumbsuckers. I know there is something you can paint on that tastes bad. Maybe you can have her nails polished and she will not want to ruin them . My best, Grandma Mary