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Ur welcome created a topic of A Stepmother's Märchen

Can someone explain to me the necklace trauma? And what letters is the mom talking about?
Also did Shuri ran to her mother after she got abused by her ex husband?
Is the panel where Shuri and and the mother is wearing all black is from this timeline or in the other timeline where Shuri died? Also is that the ex husband’s funeral?
I’m just confused (/TДT)/