before i went vegan, i think i was really a lazy veggie. it just never dawned on me how much was out there hiding. i didn't know about gelatin, and hate to think about how much chicken stock i inadvertently ate without ever having a clue. i didn't look at ingredient lists too often before buying something.
though on most things i wouldn't pick the meat off, there were a couple that i did for one reason or another. i remember i liked those egg sandwhiches on english muffins and would get them frozen, but my store would stop carrying the veggie ones so i'd just chip off the thin hard slice of ham before cooking it. and i liked lunchables, so i'd usually just give the meat bits away to friends or something.
i keep in mind that i went veggie before i was a teen, never knowing another veggie in my life, and it's just not easy with family and schools to get the food you want at a young age. also, i never really learned to cook until i went vegan and used veganism as a tool to learning... the only thing my mom would have me cook was frozen chili or something which was way gross.
just be patient and try to help explain your views on it, maybe try seeing why they feel they need to do what they do, and sum it up to everybody taking their own sized steps on the path we choose. also, remember that we're all here on this path for different reasons, and these things might not register with her reasonings.