okay so Hildr Olgadottir is Olga's oldest daughter

she was almost an adult when Olga left Alfheim to go to Asgard

Olga didn't tell her that she was leaving

she waited for hundreds of years, but Olga never came back

she's introduced into the MCU in Freya, Freya's movie

she's extremely jealous of her half sisters and wants them dead

she's a Young Avengers villain and Char if you want she can be a Gemstones villain