I also think it is possible he didn't initially pick up ML with the intention of killing her...she could have gone to his housing willingly but when confronted with the live webcamming and the suspect's offer to pimp her, she wanted no part of it.
But doesn’t aggravated murder, by definition...
How were they able to charge AA with aggravated homicide with only the tissue they found at his house? Blood and skin tissue is not proof of death! It seems like they would need brain tissue (etc.) to determine she had actually died. This is puzzling.