I think that you could be correct that Aniah sustained her life threatening injury during the critical hour of 11:20pm to 12:30am.
There is a very technical article here about the morphology of drying blood. How the drying blood changes over time.
https://hal.archives-ouvertes.fr/hal-01770001/document
Simplified: first spreading, then coagulating and changing colour - from the rim of the blood pool to the centre, then shrinking and cracking.
In this way, they can estimate the time period of the blood spillage and whether or not it was a life threatening quantity.
Personally, I have been wondering if Aniah made it out of the Auburn area. If she is not still there somewhere. And I hope and hope that they have searched in the area of her disappearance thoroughly.
After Yazeed was caught in the same vehicle as a seriously injured man previously, I have wondered if he didn't want to chance being caught in that kind of situation again - while driving from Auburn to Montgomery.
Yazeed and Ford were captured when Macon County deputies made contact with a vehicle driving erratically down the interstate. Inside the vehicle was a severely beaten 77-year-old man who has been assaulted, robbed and abducted from his vehicle in Montgomery
Aniah Blanchard missing: Ibraheem Yazeed wanted in connection with missing Alabama teen