Rozied,
It is good to let your son know how his behavior is effecting others. Will he care? Who knows he is still active, do what is best for you. I know it has taken you awhile to write this letter and that you turned it over to your HP to help you with the words. Mail it, let your mom know what you did so she is prepared if he should call her and if she accepts the charges. Maybe she will not accept them, and won't have to speak to Joey.
I know how hard this is on you and how worried you have been about your parents. Also let your ex know what is going on so if Joey calls him he can also tell him what your parents are dealing with health wise.
Keeping you in my prayers and sending you lots of hugs. Stay strong and do what is BEST FOR YOU!!!!!!!!!!!!!!