Isn't there a choice between mom and sis at the beginning? Not tried the mom path yet, as I'm busy with other stuff and essentially didn't play that much lately.Makes me wonder what the storyline does without sis, since that perv keeps ogling her during our Monday afternoon-sessions.
Well and Larson has 2 optional favours you can ask to add...herself and the other one, if you fail for the club. Don't know if you can take both, but at the very least you can get tamara and 1 favour, even without sis, so there's at least a chance you can still build the club.