Is Mary the Principal of Her Sanctification?

The spark of sin is in Mary's Sukundam's sensium according to its essence, but it is legatris. She doesn't experience their effects as she's preserved from any stain that they would incur on her soul. But rather it is Christ who is the principal of her sanctification and yet Mary in order to be fittingly sinless can't even experience the Fomis Vakati.