I have a very difficult time believing that CL was not aware of AL's past history. Being a mother and having "others" in the same household, I would definitely, 100% positively want AND need to know someone's past history - criminal, social, past relationships, etc., before I would risk having him in my household, let alone marry him. His social media shows a lot about him and it was open to anyone for the viewing...Just saying...
ETA: I too believe there is a lot more to this story than we are aware of and I believe there are many pieces to the puzzle missing and they are missing obviously for reasons. Hopefully, all the pieces will eventually fall into place and then a lot of our questions will be answered, and IMO we will see that others DID play a major role in what took place before, during and after Beverly's life was taken. It is all so so sad. Hopefully, those that DO know will start telling the truth so that justice will prevail, rather than trying to cover up what really did take place. JMO.