There isn't time for dating in the Grasswipe clan. With some sleuthing tips I picked up from Judy, I was able to track down her family coat of arms:

The helmet gives us a clue to her Viking heritage, and the rabbits explain how she is a great-great grandmother at her age.
I'm no latin scholar, but from what I can tell, the inscription loosely translates to "Old enough to bleed, old enough to breed".