I think laguerta will find out and Miranda Lawson will kill her to protect dexter, getting caught in the process and breaking Dexter's heart as she is hauled away to prison for life
I am expecting her to kill Deb after finding out that she's been pressuring Dexter by checking voicemails or something else. She might try to frame Deb as the Bay Harbor Butcher with her close ties to the Ice Truck Killer.