Have you had a child who sucked her thumb? I have. Like the mom of this Wee Kitten, I worried when she reached five years of age. And I worried because that winter, the thumb looked smaller, and red, and they get this rushes from the saliva, that make them quite disgusting. Not to mention the front teeth that start protruding, and the potential speech problems and the host of horrible things a mother anticipates happening.
To make matters worse, I heard that children, when they go to school, they see others not sucking their thumbs, and they stop the habit. And I was homeschooling the girls, so that would not help. Plus when I substituted for a music teacher, I got a group of third graders, and a cute little girl, when it got to be listening time and they made themselves comfortable, placed her thumb in her mouth and told others boldly how nice it was. Nobody made fun of her. She said goodby to me, and she WAS that girl with the terrible consequences I mentioned. Protruding teeth, defective speech, rotten thumb. Still cute, but I wondered if she'd be sucking her thumb forever, and secretly, as I have heard some grown ups do.
My daughter grew, and at five and a half, after a few tricks and failed attempts to discourage her to suck her thumb, I stopped worrying. I simply told her I worried like I did because her thumb was getting damaged, and her teeth could suffer from it. Once she put her will into this, and she saw the benefits from stopping the habit, it went away!
In The Wee Kitten, the mom is given the advice and tricks we try, and at the end Granny Pig's Advice, to let the kitty alone and stop worrying, is what works for her. It is what worked for me.