Hey Shelly,
I've had that experience before with a little kid peaking through, and I usually think about the cracks as well since then. Luckily though, it's hard to just casually see through the cracks, and it's super obvious if anyone sticks their head up to peak through. What I hate though, is bathroom that have windows with thin curtains, then i am afraid a neighbor could see.
edit to add: didn't see this was on mtf board, hope you girls don't mind me stopping over 🙂