Bro you ruined it when you tell her. You dont tell a girl you love her. At any situation just surprise her with action. Make her heart pump go up and down denget. That chemical reaction will put her out of just friendship mode.
But for now if you are here to listen and take action. Do the following
Move on dont say yes or no (specially with words). Just take action and move on avoid her protect your peace. Respect your self, give yourself love, ....improve your self, read, dress better, workout. Be the best version of your self and be on another level then you will realise that she is just somegirl you happen to feel something special because your are special not her owk brother . So yane you will see other real women that is on your level you just become. And that is on the same page as your feelings are.
Stay blessed
Jan 17, 2022