You know the issue with that claim? It would have shown up in autopsy. There would still be inflammation in the lungs.
The child had breathing problems because of SBS. SBS can pinch off the airway.
This is a kid that was repeatedly in a hospital. Not for a diagnosed issue such as Asthma but because SBS damage kept occuring because Roberson kept shaking the child hard enough for her to pass out on multiple occasions.