On the flip side of all this
Lets assume Raven did kill Janet.
So is all of this blood everywhere, at least on the interior doors and possibly on the exterior door of the Durango, just some huge set-up? Literally placed there, intentionally, to come up with this story? Several scenarios come to mind
1) Raven murders Janet, intentionally places blood in the various places, as he comes up with his alibi on the run, literally. Then goes to play soccer. Comes home, uses this dramatic story to explain what has happened, etc. This one doesnt work for me, at least for one reason if he got blood on the drivers door of the Durango, how could he be sure no one at the soccer game wouldnt notice it, etc.? Possible I suppose, but risky too. Also, in this scenario, Raven could easily have deposited blood, trace, something inside the Durango. Plus, theres also the issue of the blood itself. Im no crime scene person by any means, but in this age of CSI, you often hear about the age of blood, blood coagulation, etc. So if the blood was deposited PRIOR to playing soccer, it would seem easily tested in that regard.
2) Raven murders Janet. Leaves Kaiden in his crib, goes to play soccer. Either hes thought all of this out in advance, or, perhaps while playing soccer he comes up with this story. So he returns home, and literally does all of those things comes in the house, kisses Kaiden, "finds" Janet, perhaps tries to "save" her, now having her blood on him, runs downstairs looking for the cellphone, and then either intentionally places the blood on the door and Durango, as part of his story, or perhaps even unintentionally, as can then be explained by his version of events, etc. Either way, the presence of the blood is now easily explained to LE when they arrive, or later.
3) Or, lastly, Raven goes to play soccer, comes home later, murders Janet, THEN acts out the whole scenario as described.
Me, Ive always believed that if Raven is the perp, he murdered Janet, THEN played soccer to create an alibi, etc. And if thats the case, my bet is on theory #2, as creepy and vile as it may seem. But, thats JMO.