So what?? The point of many people on this I think is not so much that you cannot find books treating the topic in a context of whichever kind but rather that - contextualised or not - finding that speaks about incest in a 'normal' way is impossible: incest is a moral issue and question. If you normalise it, it means you try to treat it in someone and attenuate its effect, or (and I am exclusive here) that you want to explain (which often ends up justifying in practice) why some ended up practising incest.
Now as far as contexts are concerned, contextualising more or less played the same role as explaining the 'normality' of something - am doing that for my doctorate man: most sociological studies when they contextualise never unravel the immorality of what is considered as normal. A great literary example for that is "Death of a Poet" (Mort d'Un Poete) by Michel del Castillo where you have a magnificent scene of rape.
Now if your point is to show that secluse and religiously orthodox social environments are prone to sexual perversion, fair enough for you. Guess you can find that kind of issue of Jewry being treated in several books as well and in movies as well (see Kadosh). The point is that it does not change much in some books being dodgily conservative and - I think - morally meaning ALWAYS: i.e. pro or against. There is no middle ground even of some people pretend there is. Examples - psychological incest in this case - are, by Tahar Ben Jelloun, "Sand Child" and "The Sacred Night" (about a girl who is forced to hide as a woman because her Dad is ashamed of her sex in North Africa). If you want something on incest and Islam I can give a bulk of references as well.
So coming back to my first question in this thread: WHY are YOU interested in novels on incest? As far as I am concerned, I would be as a denunciation tool but at little doses because the topic is morally slippery. My best easy to explain argument for that is that at looking at too many war 'bleeding' movies on TV I got used to violence as a principle and forgot what war might be in practice and its meaning. It took a journey to Turkey and constant terrorist thread on tourist sites and military presence, and lots of contacts with Algerian people with families exploded, threatened or murdered during the troubles from 1992 to realise it again. This normalisatio now makes me fell dodgy. So, on incest, what is your position?
I am now off... for a while. If anyone wants to follow on this, I let people go for it.
Sincerely,
Morry