Our Lady Mary has passed away into the spirit world.
Let's take a moment of silence and listen to this song:
What's worse is the way she died. I put that porcelin thing in the fish bowl so that Frank & Beans would have something to hide out in (supposedly that's what frogs like to do). I was too cheap to buy something from the pet store, so I just washed out this oil burner thing and stuck it in there. Lady Mary got stuck in one of the holes and drowned. (Beta's go up to the surface to breathe). How tragic is that? Hopefully she went fast. Poor Lady Mary.
Your namesake, Lady Mary of Downton.
and if you were wondering, Frank and Beans are taking this really hard. They just need time.