Wow, your entire story sounds incredibly hot!!! You're a lucky guy.
Did you know that opposite-sex siblings often fight because they're trying to neutralize the subconscious erotic attraction between them? So explain that fact to your sister, tell her that she's the best sister in the entire world, and tell her that the fighting is doing nothing except getting you excited about being dominated by her.
Then tell your sister that you want her to tie you up and boss you around. Tell her that you'd be happy to be her slave. Tell her that locking the door and putting her heel on your groin is an amazing turn-on.
Then ask your sister to put on a slow striptease for you. Or, you offer to strip for her; she'd probably enjoy the idea of fooling around naked with you once she hears how you truly feel about her.
Asking your sister if she wants to take a shower with you to wash off all the sweat after wrestling with her would be a good idea to plant into her head.
Whisper into your sister's ear that she's super-hot, and that her actions are causing you to develop a "sister fetish" and that she's now your main masturbation fantasy. Explain that the forbidden taboo of siblings hooking up (nuzzling noses, whispering affection, French kissing, fingering, ear licking, naked cuddling, mutual masturbation, nipple sucking, wet grinding, oral, condom-free natural intercourse) is a huge thrill for you now.
Tell your sister all of the other girls seem to be boringly "normal" when compared to her. Ask your sister if she'll fulfill your naughty taboo fantasies of forbidden sibling erotic romance in real life. Offer to sneak into her bedroom late at night for some sibling passion after your parents have gone to sleep.