Breaking Dawn flashback ahoy - Andrea Powell has been cast as Sasha, mother to Tanya, Kate and Irina!
The American actress has previously been in Heros aaaand (back in the day) Dawson's Creek - was she the teacher who had an affair with Pacey?!
I can totes see her playing Mom (if all but briefly) to the Denali coven :)
Via Twilight Lexicon