"Nothing," Sarah said, her lips tight as she began her pacing once more, not aware of it. "Nothing is bothering me."

Karen watched Sarah closely, seeing how she wrung her hands, the stiffness of her body, the back-and-forth movement from one end of the room to the other, the slight frown on her lovely face.

Sarah fought to keep herself calm. Karen had always been very perceptive, always seeming to know about others just by looking at them. She didn't want Karen to see through her, see what was tumbling about inside her mind, see that she had fucked her son, that she was about to go out of her mind with this crazy, tormenting desire.

"I get it," Karen said softly.

Sarah did not reply, but walked to the huge front window, facing it, staring out at the bright sunny day. Sunshine shined though the window, and Sarah did not know that her body was outlined under her dress, her long legs showing as she stood with her feet slightly apart. Karen was looking at her sister's back, seeing how rigid it was. She knew, instinctively, what her younger sister's problem was.

Quietly she stood and moved up behind Sarah. When she placed her hands on Sarah's shoulders, she felt her sister begin to tremble, and heard a soft whimper come from Sarah.

"I know what it is," Karen whispered soft.

"You're tight as a drum, Sarah. I went through this once, when I was in high school. I know just what to do to make you relax. A girl helped me then, and I'll help you now, Sarah."

Karen began massaging Sarah's neck muscles, her fingers firm and soothing. Sarah whimpered again as the touch of her sister's fingers sent a wild, bubbling her to her aunt, her tits pushing out hard at her dress. She closed her eyes, resisting the urge to lean back, give herself up to her sister's soothing hands and fingers. She tightened her muscles, clenching the checks of her ass.