The God of Pain's Groom chapter 2.8 discussion

[Blackangel]

and what is happening with the grandmother?
she knows that it's river and not forrest? then why did she continue with the ceremony?

 

[Rinko]

She can't stop now
I wish she had stopped it before it had come to this.

 

[Blackrose]

Seeeeeeeeeeeeee
I told you so
Maybe she knows that Forest doesn't ant to do it so she let River do it

 

[Blackangel]

Seeeeeeeeeeeeee
I told you so
Maybe she knows that Forest doesn't ant to do it so she let River do it

you are right
or she known it after seeing river in the bright light. it makes sense in way.