The Vanisher by Michael Shaara

There was an icy sting lancing her arm, and then a million furry brushes began rubbing in her body. In a moment Ivy was totally paralyzed.

Black shapes, dripping and lean, picked her up gently, conducted her through the low hanging trees toward another place where a black square loomed. The hands were impersonal, but never in her life had she been touched like this. She was absolutely terrified. A door was opened. She was laid upon a dark hard floor. In a moment the floor began to move and she realized through her terror that she was in a truck. But they left her alone. She lay for a long while upon the floor unable to think. She could not possibly understand this, the who or the why, because she had not dreamed about it, or ever even considered it.