I work in healthcare. It is very hard to describe to you in short posts that things are different IMO than what some are interpreting. One of the easiest ways I can think of is to compare Reeva's dead body being able to spit blood is by linking to a compression device:
Quote:
The primary functional aim of the device “is to squeeze blood from the underlying deep veins, which, assuming that the valves are competent, will be displaced proximally.” When the inflatable sleeves deflate, the veins will replenish with blood.
The intermittent compressions of the sleeves will ensure the movement of venous blood.
http://en.m.wikipedia.org/wiki/Intermittent_pneumatic_compression
Also, the veins and arteries don't allow blood to keep bleeding out after the heart stops. Information can be found at Wikipedia.
Reggie Perumal (sp) is OPs expert, he attended the autopsy. He said in interviews that Reeva was using the bathroom when she was killed, and he said she died on the way downstairs. His version of those two things was tailored around what OP needs things to be, so there is a reason they needed her to die much later than she did.