What an interesting way to look at it – I wonder how Jenny would have been if she had had the opportunity that Jamie had to go to France and study there. I think she is just as intelligent as he is. Maybe there is some unconscious jealousy of Jamie as well as of Claire. She is the elder of the two siblings and yet she can never inherit Lallybroch because she is a woman. So maybe that is something that drives her in her wanting to keep Lallybroch for herself and her family. Not to say she doesn’t love Jamie but women were treated unfairly at that time and place.