Try talking to her about it... and if she keeps butting in all the damn time (like women do) or just walks off to do womany things (washing, cleaning, ironing, hoovering, cooking, etc) then write it all down and leave it on her bed. Dont write stuff like 'I do it cos I fucking enjoy it and you cant fucking stop me' etc etc, be polite. Also, try saying/writing that you did take a break from it for a while, tell her the differences in your moods in those two time periods. Oh, and something Id say if I was in your position - look, I wasnt stoned that time when you thought I was, and I find it very upsetting that you cant even trust your own son.
BTW, the womany jokes were my piss poor sense of humor. No, I havent had a girl in a long, long time. Lol. But Im not bothered - theyre more bloody trouble than theyre worth!