Toward the End of Solomons time we put him in Kitty condo when he wasn't getting cuddles. It sounds cruel but he loved it. Kept the younger cats from annoying him and also allowed him freedom that if he peed outta da box it was no biggie. It worked for us (the condo comes in handy years later to put new rescues in to acclimate them) it may work for Ginger. HUGS to the wise old catand some for you also.
Doc