Tbh I really lost a lot of respect for the author with this chapter and the last. He could have literally chose any other girl and Chise might have still struggled with the moral dilemma but in the end swallowed it.... Stella is purely used just because she is "randomly" possessed by fuckwit and the the drama factor. Make no never mind that both Ellias and Ruth would know she would react poorly. Just felt almost dirty and cheap plot line to force her to leave with Joseph.
@KazutoKatsuragi
Truely have to agree. Joseph is a morally corrupt individual that is more then willing to betray any agreement he makes. There is literally no reason to go with him other then he is there and can offer a quick exit. Its come to the point I only see Chise coming out of this because the author just says so rather then a clever plan or some other plausible explanation.
I have to disagree with you on all points.
1) True, Chise probably will react the same no matter who is used for this ritual... But Stella is a close friend. Joseph figured that out and used her to get close to Chise and plan out whatever he has in mind right now.
2) I don't think Elias actually has any idea where Chise has drawn the line between what's acceptable and what isn't. He purely acted with the sole purpose of saving her in mind, without thinking of the consequences.
3) Ruth is bound to Chise as a familiar: his life depends on hers. If she dies, so does he. Sure, he could accept that and let her go, but right now he doesn't and thus chose to follow Elias' decision.
4) Joseph is indeed far worse than Elias and there is no logic in choosing to go with him... however, what Chise found out at home left her in a state of mind where she could easily think it would be okay to join Joseph's side rather than return home.
Anyway, it's pretty clear to me the author knows what he's doing and does it well.