It's been done at least once that I know of:
Warrior's Honor (very MA) by Crystal-Tiger82674
Battle with Naraku is over. Everyone but one is died. Can a lone survivor, carry on with life knowing she survived and the others didn't. Has the fates punished her for something or left her alive for some other fate?Pairings Sess/Kag,Kag/InuTaisho.
M, English, Romance, chapters: 76, words: 376k+, favs: 209, follows: 132, updated: Nov 27, 2011 published: Sep 7, 2007, Inutaisho, Kagome H.
There is also Kouga/Kag in there. End pairing is Kagome/Papa. Kagome gives is pregnant and gives birth to pups/cubs in Inuyoukai form for both Sesshomaru and Kouga. There's also non-con that masquerades as dub-con or fine, abuse, violence, kidnapping.
I didn't find this to be a great fic, so it's not a recommendation as much as information.