"They did not leave my house."

[kanielc]

How does vouloir enter the sentence?

Wouldn't this be correct:
Elles ne partaient pas ma maison

I'm guessing there's something with using partir there.

[ferynn]

They did not leave my house = Elles ne quittèrent pas ma maison = Elles ne partirent pas de ma maison
Elles ne voulaient pas quitter ma maison = They did not want to leave my house.