<human>: Can you succinctly summarize the text in 1-3 sentences?

I've been living with my boyfriend of 2 years and his teenage daughter for about 3 months now. I'm the only one at home this weekend. I just went in her room to borrow a pair of tweezers because I couldn't find mine. I wasn't trying to snoop through her stuff or anything. But when I opened the makeup drawer, I saw a bunch of lighters and smelled pot, so I looked in the back of the drawer and there was a bag.

Do you think I should tell her dad about this first, or should I talk to her about it directly? Obviously she has a closer relationship with her dad than me because he's her parent and I'm not, but she does usually come to me more to talk about personal issues, because of course it's easier for a girl to talk to another girl. He also tends to overreact to things out of anger without taking time to cool down or collect his thoughts first, so he's not always the most effective communicator in situations like this. 

I feel like it's not up to me how to handle it because I'm not her parent, so I should tell him and let him handle it. But I also feel like if I talk to her about it first, it would be a more honest and productive conversation. I need to apologize for going in her room without asking anyway. :P
<bot>: I accidentally stumbled on some weed in my boyfriend's teenage daughter's room and I don't know if I should tell him right away and let him handle it, or talk to her first because it will go better that way.