So you think he asked for the tests because he is guilty , but knows he did not use the silencer?
Caroline ignores that Jeremy knew all along that his own experts failed to find any blood inside. That alone made the test worthless, it was always just a propaganda tool which was planned to be used. Whatever the results were they had hired someone to try spinning the results in the defense's favor. That entailed an expert claiming a partial profile was a male even though there was no scientifically valid basis to make such a claim and to ignore that Sheila's DNA was found based on the statistical match. Instead of admitting the match was statistically strong enough it was represented as being not a strong enough match to say for sure it was hers. The chance of the missing markers ruling out Sheila was not statistically significant but she strained anyway because she was being paid by the defense to do so.
The fact the defense knew there was no blood based DNA means that if they did find Sheila's DNA and only Sheila's DNA they would still have a basis to argue it was meaningless because it was not blood based and thus was the result of contamination. So Jeremy had nothing to lose in requesting the test.
Caroline's claim that he would not have requested it had he used it is false. He had nothing to lose in requesting the test. Indeed convicted people rotting in jail who are guilty routinely request DNA tests. Countless rapists/murders have requested DNA tests and the DNA ended up matching them. More than half the time when DNA tests are requested he results substantiate guilt.
Caroline's argument also makes no sense because Jeremy was asserting police or family planted Sheila's blood in the moderator. If he thought they planted her blood and expected DNA to be found than he would have expected her DNA to be found.
Caroline's sole basis for saying the moderator wasn't used is because if it had then Jeremy would not have wanted the test. This is a ridiculous argument in light of the points above especially that a majority of the time when convicted felons request DNA tests the DNA confirms their guilt.
A rational person assessing whether it was used would look to the evidence related to the moderator.
1) If the moderator were not used Sheila's blood would have been in the rifle barrel
2) If the moderator was not used the the ceiling lamp would not have been broken and the mantle not scratched
3) If the moderator was not used then it would not have had blood on/in it and not have had paint on it.
These are the things that must be addressed in order to establish the moderator wasn't used and thus enable a rational objective party to believe it wasn't used.
Those who believe it wasn't used for reasons other than this are not looking at the issue logically, rationally or objectively. Their beliefs are thus meaningless to anyone except themselves and other biased people who take comfort in the fact others share their views.
A rational person who cares about the facts and evidence and the Courts which care about facts and evidence couldn't care less about the unsupported opinions of people.