I think....(spoilers)

I think there should be another movie where Li Li and Mimiko face off! Heh.
But I have so many unanswered questions! First of all, I know people have pretty much said that Li Li and Mimiko kinda worked together just kinda for the hell of it, but someone said that when Mimiko's body was found there was coal dust in her stomach, right? I took that to mean that Li Li was ultimately responsible for Mimiko's death, did anybody else think that? So if it's true, did Mimiko get a call or letter? I just find it kind of lame to think that after Mimiko died, she and Li Li just met over a dead body and decided to kinda cooperate...^_^;
Also, what happened to Mimiko's sister?
Please keep in mind that I haven't seen Chakushin Ari Final, or the TV series yet.

edit: also, does anyone know where I can download or read online, or buy english translations of the manga and novels?