Just be honest. It may hurt her feelings, may not. I'd want to know that the people I'm seating with dont want me around rather than sitting and feeling dumb in the end. Theres no really easy way around it. Being blunt isn't rude..
Hi, I'm 17, 5'2, and weigh 95 pounds. I'm looking for a dirt bike that is good for a beginner that fits me. I'm having a hard time. Would 100cc be good? And I'm having trouble understanding the differance between 2 stroke and 4 stroke.. Does one give more power than the other?