Embarrassing

I recently had family over for a family dinner. This meant immediate family and relatives, cousins, uncles, etc. Usually I always go in the basement with my cousins, both boys and girls and we always just mess around. But this time, no one else came (cousins my age) besides my super hot step sis… I have the biggest crush on her and she knows I have a crush on her. And of course, she gets to my house and she’s wearing yoga pants and a crop top. She was perfect looking. Anyway, we get down stairs and we are both just awkwardly sitting their on our phones because I’m super shy. Then I finally got the urge to ask her if she wanted to do anything. She replied “why would I want to do anything with you, you are weird, boring, and weak.” And this caught me off guard. We ended up getting in a verbal fight which lead into an actual fight where she completely dominated me with scissors, head locks, and even smothering me. She then made fun of while just sitting on me until I admitted she was better then me and too good to be involved with me. Anyone else have similar experiences or advice on how I can beat her? She is about 5’8 150 and I’m 5’5 135