Here's a couple...
The Flower Girl by Kanna37
The story of how one tiny child led a human-hating youkai Lord and a pure-hearted miko to love - all through the medium of her favorite thing... flowers. 2nd Best Kagome portrayal and 3rd Best Romance 4th Quarter 2009
Rating: T, Universe: Canon, Status: Complete, Category: Chapter Stories, Chapters: 100
Mine! By: angelic memories
Kagome has been captured by Naraku only to have an unexpected hero save her. Not once but twice and counting. How will her encounter with her saviour change things? KagSess *Rated for later chapters*
Rated: Fiction M(possibly MA), Chapters: 39, Status: Complete
EDIT BY WICCAN: "Mine!" is rated MA on our site, NO YIMs!
In
The Flower Girl it's not until the very end; it's possibly the story ponpiri is talking about. In
Mine! it's about ten or so chapters in.
I read another where Kagome's mom goes through the well near the end I think, but I can't find it. It turns out Kagome's father was a demon and went through the well for whatever reason and fell for her mother, but he went back to the past for some reason. Kagome brings her mother through and they're reunited and end up mating I think. I believe Souta is his son as well.