I hope there are scenes of Myriam with Katherine, I loved their relationship. In my interpretation Katherine loves and admires Myriam, but doesn't necessarily want to be like her, it's more like adoration, in the scene where Katherine gives Myriam a glass of wine, Katherine's expression to me It looked like one of adoration.
And Myriam already looks like a statue of a muse, or a Goddess, that would add a lot to the character.
I made Myriam dominate Marc, it would be amazing for Myriam as Dommy Mommy introducing her children to sex.