The prodigal son was a character in a parable, a fictional story. This Markle malarkey is fact; “all you can do” in response to it is not governed by a made-up response to the waywardness of a fictional character, is it?
A parable meant to instruct us about how we conduct ourselves human to human or human to the Lord. The Lord lets sinners choose to go their own way too, and rejoices when they repent and come back to Him as the human father in the story did. We will see if at the human level Halfwit ever repents of his selfish and heedless behavior and returns to his family after his unloving wife uses him up and tosses him aside (her lifelong relationship pattern). Will she ever do the same and reconcile with her father who she used praise for giving her so much?