She obeys

Reluctantly, she took her shirt off, slowly. Her tits bounced when her shirt got up to her collarbone. She tossed it aside, then turned to show you her ass, as she pulled her pants and panties down. She turned back and waited "On your knees, spread your legs." you commanded, using the crop when she delayed. "Why do you hate me?"

She stared at you, locking eyes. You can see the sorrow in her eyes, possibly because she can see the hurt in your own eyes "I don't!" she said "It's how I show my love. I made your friends betray you, showing you the only real friend you had. The pranks? I am your bigger sister. It was all because I love you. Is that why you are acting like this?"

You kept your gaze fixed on her "Are you tricking me?"

"No! I really do love you! I...will submit to you, willingly. I accept everything you do to me, until I prove myself to you." she said, lowering her gaze "I...can't handle a clit orgasm...." she said, after several seconds of thinking.

"I want to see." you said, holding the crop ready. She leaned back on one arm, then used the other to finger herself, and focused on her clit. From what you heard and peeked on, she would've normally moaned loudly, but since she is teasing her clit, she is louder, almost screaming.