As he was laying against the hard and rough surface of the tree, Nell didn't have the strength to lift his hand, let alone do anything else.
The reincarnation stuff, him killing Ember, and her being his wife in the past life too, everything was just too much, and his brain was having a hard time processing all of it.
It wouldn't have mattered to him if he and Ember were only reincarnated, but, when the husband killing his wife adds up to the story that is when his worries wouldn't leave him.
He was just laying there with his eyes closed and body relaxed, and was not planning to do anything else.
Well, it wasn't like his body was hurt or was tired, no, he was just emotionally drained and needed some time to get over the doubtable fact that was given to him.
