Speeding ticket please help?

Help I got a speeding ticket, I was going 63 in a 35 zone, and to make it worse I had a couple of blunts in my car and my dad is a state trooper and he'll kill me if he finds out. Also I am a sixteen year old girl and my parents are divorced and I live with him and his girlfriend. I'm thinking about asking her to tell him because I'm scared of telling him myself IF he finds out.