No I'm not, how do you know where I'm looking
? I'm looking at the top and I don't agree with you! Of course some of the blood was hidden by the bible but however far it ultimately reached, it would have extended from Sheila, there would be no gaps. Your theory doesn't work because it doesn't explain why the stain doesn't start at the top corner of the page - there is a gap, then the stain starts (see below). The stain is also TOO well defined to be from the stain on the floor. Finally, for your theory to be correct, there would still be blood on the opposite page because some of that page couldn't fail to touch the blood. The second picture is a top view and the bible isn't raised as much from the bent back pages so more of it is touching the surface area.
Finally (Edit), if the pages are bent back, the corner of the page in question will be situated around where I have drawn the line on the last picture,
Those photos show how the blood pool is at the top like I said. You can't see the extent of the blood under the top of the Bible because in those photos the Bible is vblocking it. You have to life the Bible off to see the remainder of the pool.
Those photos are taken from a top profile not side. The bottom photos I showed are from an angle and thus show the pages folded over. The folded over pages were under the half of the cover closest to Sheila's body thus IN THE BLOOD. The beginning of the right page is in the air so not touching the blood pool. BUT a portion of the right side did touch the pool. That is why you have blood on the left hand top and right hand top. Your suggestion it is a palm print doesn't hold any water and was rejected by those who actually looked at the Bible and tested it for bloody prints.
In between the 2 green lines is the portion of the right hand side page which was sitting in blood actually touching the floor.
In between the orange lines is the section of the left hand side which was touching the floor.
In between the 2 is a gap where nothing was touching the floor there was air.


This is the result:

The result is blood on the top of the left side that was touching the floor. A gap then the blood on the right sided that was folded over and also touching the floor. The blood on both sides combined is the size of a page. If the book had rested perfectly flat in half then all of it would have been on the left side and none of the right but because it was folded over much got on the right side though some got on left anyway because part of the left was still touching the ground, only part to the left side was blocked by the right side being folded over.