Like, if she wants to let me down, gently or otherwise, she could do a way better job of it. and of course if she's interested in me she could do a better job of signaling that. and if she just wants to be friends, etc.
and even supposing she were evil and purposely leading me on, she could stand to be less incompetent at THAT. I could give her all kinds of great pointers on twisting the knife in my heart.