I wondered if anyone noticed that Frederick used Anne's Christian name when discussing with Charles the details of caring for Louisa?

"...but if Anne will stay, no one so proper, so capable as Anne."

It is the first time he's done so in eight years. We know that Anne overheard and noted it:

"She paused a moment to recover from the emotion of hearing herself so spoken of."

But there is more:

"You will stay, I am sure; you will stay and nurse her," cried he, turning to her and speaking with a glow, and yet a gentleness, which seemed almost restoring the past. She coloured deeply, and he recollected himself and moved away.

I find his reaction interesting. The manner of his speaking "almost restoring the past" affected Anne very much. How pleased, how gratified she must have been to find a connection, a feeling still there. She can't help but blush, and when she does, he moves away. Why? Was he about to say or so something more before he recollected where he was and what was going on?