They should seperate from Inuyasha, after what he said about their 'sister' and the 'mother' to Shippo. Maybe Kouga or even Sesshoumaru stumbles upon them and they make an alliance to travel together to defeat Naruka and along the way look for Kagome.
Needs to be proofread/beta checked.
For instance,
"I dough I will find…"
"dough" is what you make bread & pizza from, "doubt" is the word you are looking for.
"it seemed the young women may have had lessons in the field before her memory loss"
Woman, not women.
"vial hanyo"
"vial" is a small flask/container that is used to hold potions, perfumes & such, "Vile" = horrible, disgusting