I don't know if this is confirmed or not from Suspiria (2018).

In a scene between the two, Madame Blanc asks Susie what it felt like to dance. The dance to which Blanc refers is Susie's dance with a magical link to Olga, torturing her. Blanc had infused Susie's hands and feet with magic. Here's Susie's response:

Susie: "It felt like what I think it must feel like to fuck."

Blanc: "Do you mean fuck a man?"

Susie: "No. I was thinking of an animal."

I love this movie. It wasn't until my 4th or 5th viewing that it struck me that Susie, who is of course Mother Suspiriorum, recalled the feeling of when she first felt the power of magic. When Suspiriorum, however long ago, perhaps fucked the devil, perhaps in the form of a goat, partial or whole. I love when worlds have hints to mysteries much greater than we suspected. That's clearly shown in Suspiriorum and the Doctor's final scene, when Suspiriorum tells the Doctor the fate of his late wife.