Is it normal to feel uncomfortable when my cousin teases me?

I'm a 19 year old guy and my cousin is only 2 years older than me but she is a pretty successful model. She's really outgoing, fun, and intelligent, and in contrast I am very shy and nerdy. When we were kids we had a great family relationship and we were very close. Sometime we used to wrestle and do all sorts of crazy things. Even back then I had a little crush on her which was why I liked spending time with her. She was a huge tomboy back then. But things definitely changed a lot. I am so intimidated by her now. Nearly everyone in my family has tremendous respect for her while they treat me like I almost don't exist. She's strong, bold, independent, and even sometimes manipulative. She always gets what she wants. Recently she saw me coming out of the bathroom and cornered me against a wall and asked me if I had a girlfriend yet, I started to blush, and she just pinched my cheeks like I was 5 years old. She even humiliates me in front of my parents. But everyone sucks up to her for being a "celebrity". She is barely over 5 feet tall but she strikes fear in my heart.