Pan, I hope you love Mantel. Lots do. Though I had a long cosy chat with a former Booker judge who is ABSOLUTELY NOT RC and she turned out to loathe it even more than I did. Can't out here, but let's say she really questioned the choice of it.
I just think she/Mantel is pandering to the totally, drearily normal use of historical fiction to ask NOT 'what would it be like to live in the sixteenth century?' but 'what would it be like for ME, wonderful modern ME, to live in the sixteenth century?' IIRC, James Wood said this about Mantel. It could be said about many.
But don't mind me, LRD and others. I'm a widely known crank.... 
On purgatory, I was thinking the other way around... purgatory is the incredibly stupid boring valueless bits of THIS life we somehow can't let go of, like the internet, especially Twitter, and TV we KNOW is stupid, and toxic people, and dull jobs, and the grease behind the cooker... but forever, until we can/do let it all go.