One thing's for ril, those Todds were a pack of rats. Reminds of my dad's family, in fact.
I am hoping the book goes into Mary's spiritualism and the seances they held at the White House, but we will see. Lots of historians don't care to delve into this. There's an episode of the Paranormal Podcast that discusses it here. I haven't read her book yet. The Paranormal Podcast is interesting...sometimes ridiculous, sometimes not.