They buried her under the Goshinboku.
Miroku, Sango, and Shippo were foremost of the crowd. Beyond them were the ookami, revived by Sesshomaru. Jinenji brought flowers for the grave. Sesshomaru attended with Rin, Jaken, Kohaku, Kanna, and Kagura. Kikyo, with her newly complete soul, was there as well.
And in the very back of the assorted visitors, ningen and youkai and hanyou, stood InuYasha.
He waited until the last person had left the Goshinboku, and then he spoke to the grave. "I promise Kagome, I will never forget you." he whispered hoarsely.
Before he left, he place a simple grave-marker at the base of the ancient tree. A plank of wood, with only two hand carved words on it.
'Kagome Higurashi.'
He turned and left. "I hope you find happiness." were his final words to the grave.
The tree's leaves rustled, as if somewhere, Kagome had replied…
'I hope you do to.'