Dear Maisie,
Lately you have been blowing my mind.  Take the other day for example.  We were in the kitchen, you were perched up on that old rickety stool, elbows resting thoughtfully on the counter picking at the bowl of grapes in front of you.  I was making dinner.  "Mommy, does Great Grandma have a boy?"  I had no idea what you meant, and I was thinking "a son? a boy??"
I said "what do you mean honey"
"You know, like Auntie Kaywee can marry Matt, you can marry daddy."  My mind started spinning. You want to know where great grandmas husband is. I compose myself.