Although I really do like the idea of you being detective and sabotaging the lotion (you go girl!), I have to caution you about dragging son into the mess if you want anything kept secret. It may be hard to imagine but son could get upset with you someday and spill the beans to H which would probably not help your cause at all. JMHO
And, from an outsider looking in, I see so many postives in your situation that I just want gag with envy. Take those positives and build on them...you really have come a long way.
