I really think in the grand scheme of things, what Chelsea knows does not concern the cops. They just want Misty and Ronald to tell what happened that night, I am pretty sure the LE know all they need to know based on Ron and Mistys tests. I also think if Chelsea had anything substantial to say, she would, because she is a mother and seems to have strong feelings for Haleigh, and more rightfully so than random people who just picked up on this case because they follow true crime cases, shes living it, I dont question her actions only because if Timmy had anything on Ronald, Ronald would not be calling the cops on them provoking them from afar.
IF LE is waiting for Ronald Cummings or anyone in his family to tell the truth about what happened that night I suspect they are in for a long wait...And IMO in the grand scheme of things what Chelsea might know should be of great concern and interest to LE.
IMO Just because Chelsea is a mother and seems to care for Haleigh we'll just have to respectfully agree to disagree on the subject as to WHY Chelsea may not be telling everything she knows.. Same with the situation as to WHY Ron would not call LE on Timmy for calling him a FAB..JMHO
ETA.. Have you ever entertained the thought the Croslins may have helped out that night and were being set up from the beginning w/o their knowledege to take the fall IF and when it became necessary? And by the time Timmy and Chelsea moved to Mass plans were in the works to throw All the Croslins under the bus?