Originally Posted by FWAAA

Dunno the precise answer, but perhaps she possesses diminished mental capacity?

Perhaps he was very scary and she thought lying still/playing dead was the safest course of action?

My money's on the former.

Some rape victims fight back with everything they have. Others capitulate with nary a fight. Hard to tell why.

Her response (or lack of one) doesn't reduce his culpability, IMO.