1) Where is Helga?
Most likely frozen by Ingrid. I agree with WR. Emma is Helga’s doppelgänger. “The savior shall be my sister” sounds like Ingrid was responsible for her sister’s death, and then heard a prophesy that her sister would be reborn as the savior. I dunno. Weird.
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"That’s how you know you’ve really got a home. When you leave it, there’s this feeling that you can’t shake. You just miss it." Neal Cassidy