Aunt Allison turns 6+

Here's something really cool: Aunt Allison turns 6ish this weekend. We think. The staff tells us that dog years and human years are really different and it takes about 7 dog years to equal 1 human year. So if we did our math right, she's not really very old. Or, if we didn't, she'd be really, really old like a dinosaur or something.
We think we must be right on this because she doesn't look really, really old.
Now we're confused.