Complex sentence: Charity persuades Declan to frame her cousin, Sam, so that they can split the insurance money and deprive Jai of his son, thinking Sam, Rachel and the children would go on the run but Rachel refused, insisting that they clear their names.
Split into simpler sentences: Charity persuades Declan to frame her cousin, Sam, so that they can split the insurance pay-out. She thinks that Sam, Rachel and their children would go on the run and Charity would get revenge on Jai by sending his son away but Rachel refused, insisting that they stay and clear their names.