Sarah winced as the ties tightened around her wrists.  If she made any movement at all, the rough plastic would scrape harshly against her soft skin.  She let out a loud sigh as her body flew forward, and then hit the hard wall in front of her as the man continued to beat her ass.  She saw no reason to try and help him out.  She highly doubted that it would save her, but was it really worth it to struggle and endure more pain?  Or even a gun shot?  Sarah closed her eyes and groaned and whimpered as she pushed herself forward into the wall in order to push her ass out against him, allowing him easier access as she spread her legs and kept close to him.