well does your mother make you go out in service WITH her or can you find a way to go out in service without her? cause if she just wants to see hours on your field service report then i would say FAKE THEM.
i never faked a single hour on mine but i went from beliving to having doubts to realizing it was all horses*** and leaving in one fell swoop. if i had to hang on and knew it was bull then i wouldnt have had a problem faking hours and s*** to make them shut up.
if on the other hand you do have to be there in her car i would do what was recommended above and say you will only go to the door by yourself and then appologise and say your mother is a jw and your sorry you have to bother them and wish them a nice day.