Hello,
the first fic that comes to my mind is
Abyssby Elizabeth. Rating MA.
Kagome was a good girl, her stepfather made sure of that. She knew that she just had to finish highschool and she would be free from her childhood nightmare and finally get the life she wants. But then her mother's death and a shady deal throws her into a whole other world of darkness and pain. How will she escape the abyss of her life? *This is a dark story and contains sexual content that is not consensual*
It has been a while since I read that fic, so I'm not quite sure about the suicide...
Hope I could help.
Enjoy!