I realized that for all that meta above, I didn't really address if being rejected by Dad was the reason Edmund became such a pill before Narnia. I suppose I tend to think that to the extent there is familial anger it's directed at Peter rather than at his father.
and Dad isn't there and would have left gosh.. when Edmund was 8 or 9? Peter is an easier target, it seems. And yes, I think there are those stories out there, though mostly what I've seen are the over the top emo ones between Peter and Edmund that read like pre-slash but supposedly are not. I DO write directly contrary to those, which is why I always have Peter and Edmund slapping each other on the back so hard you could break a hand or toss a fellow into the shrubbery. The whole bit with Edmund crying at Fulborn Fen in Chapter 2 of Part 2 over the voices behind the Wall took A LOT for me to put out there. Weeping. Egads