It Still Bothers Me

My mom and i have talked about her smoking. She says she doesnt smoke the whole thing but she will get to a point she will smoke the entire thing and keep going and it will be harder for her to quit. I know shes not smoking the whole cigurate(however you spell it). But i've tried so hard to get my dad to stop and it didnt work, i'm trying very hard to get my mom to stop, i just think deep down no body really cares that i'm looking out for them, since i'm their daughter or niece , family, they should take it seriously and it makes me cry because i'm giving it all i am to help and it bothers me that its not working.