There’s a photo of her standing next to Neil Abercrombie, who is 5’5” tall. She’s just a little shorter than him, which is why I put her at 5’2”. That’s all in the first post I did about this, at http://butterdezillion.files.wordpress.com/2014/02/did-fuddy-have-an-open-casket-funeral-updated1.pdf
The internal dimensions of a standard casket are 79’ long by 24’ wide. I’m pretty sure she would fit.