Okay so I can't remember if it's in spark or on dokuga but here goes.

Inuyasha and the gang as well as sesshoumaru tie up Kagome and she ends up getting raped by naraku. Being all broken and whatnot she stops eating and talking so sesshoumaru takes her back to his castle. To try and protect her and get her well again. He hires this women who brings all her sons with her to help kagome get back on her feet. One of the sons falls for kagome and sesshoumaru and him have a problem.

Sesshoumaru feels guilty about her being so broken.

That's all I can remember. It wasa pretty entertaining but I havent read it in foreeever so i thought i'd look it up. Thanks

The stroy is called "A Question About Honor" from the great Kogasangel. Information is below:

Sesshomaru calls his own honor into question when he and the small group he had joined allowes one of their own to be violated by their enemy. Now, he must come to terms with his own guilt and finds that the line between duty and love sometimes becomes blurred. As she begins to recover, Sesshomaru finds that not only does he have his conscience and heart to deal with, but a powerful scottish inu lord, as well.

dokuga.com/fanfiction/story/2578/1

Yep that's exactly what I was looking for. I love that story. Thanks a lot!

Happy to help