Help me out here? Friend issues (sort of)?

Okay, you could say my best friend is a bit (a lot) spoiled. Evrytime we go somewhere if she doesn't get what she wants, she pouts about it. I get exited to even go hunting, fishing and riding a Ski-Doo. Today, we went hunting an just because she couldn't get a shot at a deer, she started pouting. How can not rudely tell her that it's no big deal?