Scootin' Tootin' machine

So yeah, Elisabeth can roll over and scoot across the floor. She is just such a wiggle worm, that she inches around inadvertently! It's quite common to find her in a different spot than where you left her, but today I took my eyes off her for 5 minutes and she completely disappeared! I had to get up, and I found her cornerned and rolled over! (Reminds me of how we'd find Esio Trot, our pet tortoise, scraping the corner of his box, and when he tried to climb up the wall, he'd flop over onto his back.) She had inched forward about 3 feet. Also, she rolls from her tummy over to her back a few times a day. I don't know if she does it on purpose or if its just a result of her constant squirming.