well im 16 which is only a year older then you so i guess i can kinda relate.. but my opinon is, if you wanna toke.. do it, i first started tokin when i was 13/14ih and my parents didnt like it, my mum cheated on my dad and my dad didnt really give a fuck about me tokin but its hard for me to tell you what to do since my parents are pretty much shitty parents.. it depends really, peronsally i think you should just tell her thhe truth.. just tell her how you think marijuana isnt that bad and less addictive then cigerettes and how you enjoy mariujana because you feel its a pretty safe and enjoyable way to relax.. if she cant accept that then you have 2 choices.. either quit smokin weed since its her house and her rules.. or live on ur own and make ur own way threw life and altho you'll stuggle threw life it'll be you're house so ur rules and ur way ofd life