Jackies Necklace

Does anybody else feel like Shaunas reaction to Callie wearing Jackies necklace was very sane of her? Like im sorry but Jackie literally was wearing it when she died, and it was attached to her dead body for months.....

Also the fact that they literally give it to someone they choose to hunt? For example pit girl literally falls into spikes and dies wearing the necklace...

Iam unsure if its THE necklace, cause Shauna seemed so confused that Lottie even had it or where it came from but the point still stands that that necklace is a bad omen no matter who wears it..