Tennyo is right, this project belongs to all of us now! Channy only owns Sierra, but the rest of the Dessies and pretty much all of Viola are not. Need be, we can not just allow this RP to be closed but can start up another.
My first reccomendation is by finishing the current story after the next bunch of posts so you guys who have spent the last couple of weeks writing can use your hard work, then jump ahead in the timeline to a point where we can continue using our character but no longer have to worry about Sierra being in there. [Kinda like how in anime a season 2 can skip ahead many years from season 1, i.e. Gundam 00]
Alternatley, we could just conveniently write out Sierra and go on where we are, but jumping the story ahead to somewhere Channy hasn't thought of is just showing courtesty since everything that develops thereafter is all our creation and not messing with the original thing she poured her heart into.
Tho either way, I don't like channy's attitude and disregard for how the rest of us feel about this.