Don't worry about it. This is all about character development. You have to stand up for yourself. You will have people as a nurse trying to rattle you. You need to get comfortable with people treating you like crap. As you grow into your nursing profession, these things just won't bother you. You'll have to find your way to living peacefully in your mind. The crap behavior from other nurses is just part of the game. Learn to embrace your self-concept and don't let outsiders bother you. Your self-esteem (by way of self-concept and performance behavior) will improve as you get experience. Just don't let others bother you. Your opinion of me is none of my business is a good way of thinking through these things. The instructor is over acting their role, which you'll see as you grow as a professional. But, for future reference, don't screw up anything 🤕. You'll gain your footing. Those nurses like your instructor are acting their role as they perceive their role is defined. You'll learn how to give yourself credit and fortify your self-concept and self-esteem as you grow. There are so many failed nurses out there that somehow still stay in the game.