I still dont think it was her. His tangible assets were the clothes on his back, that house, and the cash he had left...which doesn't seem like much as per earlier posts regarding his financial dealings.
A million dollars is not much these days, or two million for that matter. There are millions of people in the country with much more money and material belongings than him. I hardly see what he had left as reason to make these transactions, kill him, and deal with all the speculation among LE and friends and family. She really is so entanged in shady transactions as a result of their deal that it would seem so blatantly obvious she will get in trouble for something as a result, even if its only irs for back taxes or another lien or something. I don't think she would get herself in that situation and murder him or she would have to be incredibly, incredibly stupid. I would take someone of below average iq to think that they wouldn't be the FIRST person LE looks at when they own his house, assumed his loans under the title of a questionable business thats tied in with several other questionable businesses etc
The house was (supposedly) "sold" for a fair market value, and the additional sum mentioned was a fraction of what the loans would total once satisfied. I am sure he knew that the majority of them would never be paid, and think perhaps everyone is neglecting to factor in the "street smarts" of someone who did just that...grew up in the hood, dealing with sketchy characters his whole life.
So assuming that he manages to make Moore think shes getting a swell deal...taking advantage of him even. She has no way of knowing she spent an extra couple hundred grand on air. He makes it out like he just wants to lay low and if need be or trouble arises she can contact him and he will confirm everything and take care of it. He takes the money for the house, the extra money and bounces, with no intent of maintaining contact, realizing that she paid to assume loans that would never be repaid. Perhaps barbara jackson even realized that this would work and arranged it FOR him. I've seen it mention that the jacksons were previous acquaintances. Maybe they were better friends than it seems and they helped abraham negotiate this
Just speculation, but i wanted to put a different theory out there