Nuff sed,
You mean this?
Nuff Sed, it is clear you are connecting two things here that are distinct.
In the first, Amnon is sick, alright, just as the Bible says. His sickness is from his love of Tamar and his inability to have her. This is what we recognize today as depression, even the "growing thinner daily" can come from stress. There's nothing at all off or non-factual about the bible calling this a sickness (of the love of a woman) at all. However, this does not mean he had a bodily ailmenti that rendered him bed-ridden. One is clearly a psychological phenomenon... that today's best psychology recognizes easily. STRESS
with physical symptoms, but not the other.
In the second bit where he plots to rape his sister, he is pretending to have an illness he does not have. That does not mean that he did not suffer from that malady of the heart that had caused him to set up this plot with a fake illness in the first place. He basically pretended to be bed-ridden to justify being fed by his sister. So again, there is no contradiction whatsoever. The way I see it:
1) Ammon was depressed because he had unrequited love of his sister. He was SICK
2) Ammon however did NOT have a malady that rendered him bed-ridden, or his sickness did not rise to that level of making him bed-ridden.
3) In order to "cure" his true sickness (no. 1), he faked the illness no.2 and used it to manipulate David into ordering Tamar into his chamber where he took her by force.
If you are saying that When the Bible first says Annon was sick with his sister, that this was not factual, this is wrong. It was factual. Your problem is that you narrow the definition of "sick" to exclude even psychological illnesses like what Annon clearly was going through which have psychosomatic effects.
Annon could only pretend to be ill to the extent that he was NOT ill, this means that when he lay in bed, he was faking an illness or a level of illness that he did not actually suffer. It does not mean that he was not sick at all. Just not sick with the one he was faking or to the extent that he was pretending to be. His true sickness that he DID have did not compel him to lie in bed unable to eat anything.