Thanks for the chapter correction. I had multiple chapters open trying to find out how many times Mary wrote to Fanny.

I think Mary's response to Fanny's not thinking well of Henry, is indicative of why Fanny thinks she has a mind darkened, yet fancying itself light.

his fault, the liking to make girls a little in love with him, is not half so dangerous to a wife’s happiness as a tendency to fall in love himself,
I can't imagine any woman being comforted by the fact that her husband only likes to make girls a little in love with him.