I have a problem with a friend. Help?

So yesterday one of my Friends came over and i haven't seen her in a long time. i usually have issues with her because she gets angry easily and i don't wanna say anything. She is also way too bossy and acts annoying. She feels like we're bffs but I only think of her as a friend. please tell me what to do because i don't wanna get her angry while telling her how i feel.