"perhaps regular poison doesn't but i believe this poison will. you see, it doesn't target your system, it targets your demon chii, transforming it into human chii. thus i will get rid of all demons in the world. you cannot reverse the process. i bet you feel it's toll already. slight tiredness, weakness, humanity?"
"and i doubt that you will be able to counter the poison for long," Tamara glared at him and crossed her arms. "It attacks your demon chii, so the more you use it, the faster the toxin will work. at the rate you're going, and seeing as you're full demon, i'd say you have two hours. then again, i might be merciful and give you the antidote, if you tell me where to find the shikon jewel. my family is it's guardians." She draws her weapon and slashes put at the weakened lance, cutting his cheek. a drop of blood falls onto the blade and she licks it off. sneering at him, "the poison is further along than i expected."
Tamara's eyes widen, seeing it :"give it to be. you have no right to handle it." she takes a step forward.
Kagome looks back at Daisuke: "When do you think i can have the Shikon Jewel back?"
Daisuke looks at her confused
Kagome: "Remember the jewel you stole rom me?"
"oh! that thing? well, it's back at my house in the modern time...."
"you mean that we'd have to go back to the future?"
"yes"
(flashback: Dai stole the jewel from Kagome and went back home, he hasn't brought it back.)
"i'll give you the antidote if you left me have the jewel." she reaches into her back pocket and pulls out a vial.