I'm not going to hold my breath about an impending arrest warrant just yet. There is still too much unknown.
I've been scouring the bowels of the net seeking timeline for post mortem appearance of BAM in bone marrow...
I can't find any studies but that is not to say they don't exist.
an easy way out for BM would be to suggest that she pricked her finger with a used needle while cleaning up after him at some point.. depending upon quantities found..
Another is that he had previously hit her with a dart accidentally in the near or distant past..
I see too many exits depending upon quantities found and what they show about original dose administered and time frame to death.
Nothing is metabolised post mortem because those processes die when the body dies.
I agree with
@MassGuy that her snoring is indicative of a dose administered to sedate yet not kill.
Duty Ron is not a pathologist.
Drugs created for IM SC or Iv administration are not effective if ingested orally in general.
I think it's possible that other drugs were also used but didn't leave traces.
I think it's possible he shot her in the grave.
If that is true, she would not have received a lethal dose straight away..
Also possible that he darted her several more times in that grave.
Just not holding my breath, we have minimal info..
Pathologists will likely differ.
I console myself that Iris is probably breaking what's left of her brain too trying to find outs for her beloved client..
It's not home and dry unless the the test results are far more damning than the report we received.
JMO