>>720671335
No, you fucking idiot. The First Sinner is there to show you what Widow would have been like if her mask wasn't ripped off leaving her batshit insane and her silk-ducts literally pinned shut.

The First Sinner acts like the in-between of Grand Mother Silk at all her power, to the First Sinner which shows the power given to the Weavers by GMS, and finally to Widow, a Weaver with her power and intelligence forcefully ripped away from her.