I like Amy's idea but you should have frank and gerard go out for ice cream and at the ice cream stands they could see Jonathan bringing the rest of the Family to celebrate his return from the hospital and when Jonathan sees gerard lauging and having ''fun'' with Frank, he gets maaaaaaaad and slaps him, drags him home 'proceed with amy's idea :)
Cuz then frank will have a vague idea of what Jonathan does to gerard too
This is fantastic btw can't wait for more !!