Ahh yes your right, my bad. I was thinking the power was equal to her age but it is actually -1 her age. I was doing 2^3 when it should have been 2^2. I guess that is what I get when I don’t show my work. Dang math teacher was right.
Not only that but it is different enough with the year in front that you can assume MM/DD is next. With the other two MM/DD/YYYY or DD/MM/YYYY you are stuck relying on context to fully know what format someone is using. (Unless the day in question is greater than 12.)