Willow saw the wall coming and teleported out of the way. Or, at least, she tried to. The fact of the matter is, she merely faded slightly from view before returning just as quickly. Once more solid - and still in the path of the incoming wall - she tossed up a hastily made magical shield to protect herself from the worst of the impact. It didn't stop the projectile, of course, but it was the reason she was flung across the yard and landed in a heap with only a few bruised ribs rather than be crushed instantly.
Lying in the grass for a moment, Willow summoned the magic in the air around her to heal up her ribs. When the pain didn't lessen, her brow furrowed. Something's wrong, she realized distantly even as she was climbing back to her feet. Once more she tried to draw in the energy of the very earth itself... and once more she came up severely lacking.
He's done something. A-A spell, or... something! The thought was a slightly panicked one and Willow knew with everything she had within her that she needed to get out of there. Now.
Yet again, teleportation wasn't working. So instead she threw up a thick fog that encompassed the area and obscured her from view. Then she took to the woods near the property and found a group of trees to hide behind while she tried to regroup. As she waited, she pulled a bottle of holy water from her pocket, along with a small bag of rock salt. Surrounding herself in a circle with the salt, she pressed her back against the bark of one of the trees - as far away from the line of salt as she could manage to get - held the bottle of holy water in front of her, and waited.