In your fantasy world I may be "stumped". The reality is Bill has been peddling this idea for years now, and has only convinced one person who is a conspiratard. All while being refuted and dismissed by everyone else.
This is nothing more than bluster David. You literally have no feasible explanation, as to how blood could transfer to her wrist and then, as if by magic, freeze in one place, without running in any other direction.
Remember, in order to understand what happened, you have to work out the following:
Where the source of the transfer originated.
When the transfer occurred.
When it froze in its tracks.
Why it froze in its tracks.
You're beat David. You can't provide adequate explanations. Regardless of what happens re the CCRC, it's over for you on this issue. You are soundly beaten.