As far as I can tell, there is no consistent angle that matches all of the blood drips.
Why must she have stood (or lain) still while the blood finished dripping?
Her eyes show no sign of pain.
Have you ever been bombed, or shot, or in a car accident, or fallen down stairs? The pain often doesn't kick in immediately. The pop explanation for that is "adrenalin" - I don't know the scientific reasoning. But it's a very real effect.
While I realize you intend your tone to be scientific and dispassionate, it is a little too reminiscent of those you use "rational analysis" to deny, well, just about anything.