Nope you are wrong Scip, I have not ignored it at all. You are the one that is biased because you are tunneled and want to believe everything you read to be correct, but you are not always correct are you. Will you not except that sometimes what you read can be false. You will not look at it from a different perspective or consider an alternative. This is where you fail most of the time and this reflects how biased you really are. Shame you can't balance the scales like a Libran.

Just because she had no interest does not mean that she did not know how to pick up a gun and use it.
You are just projecting. You have tunnel vision not me. Saying someone could be lying is not enough to establish they are which is necessary to disregard something. You want us to believe the family and Jeremy lied in their statements and that Sheila actually had fired guns before and had an interest in them. You want to ignore logic and pretend that because she grew up on a farm she would know how to operate all guns of any kind even though the family hadn't even owned a semi-auto until a few months before the murders.
Being objective means taking the evidence as it is found not ignoring it and that is what you do you put on blinders then absurdly suggest anyone who doesn't wear the blinders you wear are biased. That is classic projection.
We are trying to assess the situation JEREMY claims existed to see if his supposed reaction is one that is credible. His own claims are that she was not known to have any interest in guns or to have fired any to his knowledge. To put ourselves in his place means putting ourselves in the exact position he claimed existed with a sister who had mental problems but the problems were controlled, she wasn't violent towards the family in the past...
You don't want to do that because you know Jeremy's actions are indefensible. That reveals who has the bias in this instance.
People who are biased make poor advocates precisely because they can't see the evidence in the light an objective party sees the evidence and is thus unable to try refuting that evidence competently.