Did You Wash Your Hands?

Just a short-one today...

I've spent a large chunk of time in places that either don't have outhouses and/or bathrooms, or maybe just have "vault" toilets. I'm sure you're asking yourself, "why in the world is he telling us that?"  I'm just giving you a little background info. Umkay?
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I spent a lot of my childhood at my grandma's house. It was actually more like a cabin. Not a mountain cabin, but a desert version. It was a very rustic place, but it did have an indoor bathroom and septic tank. Normally, that would be a great convenience, but we (me and my brother) were never allowed to use it during the day or evening hours, we could use it in the middle of the night, but only if we couldn't wait until morning. 

That means that ninety-nine percent of the time, we used the outhouse. Upon our return, there was never a single word said about washing our hands. However, on the rare occasion that we used the indoor bathroom (snow, rain, thunderstorms, etc). She ALWAYS asked if we had washed our hands. 

Is that more than a bit odd, or is it just me?