Gad! If only I could!

So far, pendulum testing evades me, what little I've tried.

I'm better at being pulled forward, or pushed back, as long as I check that I'm not 'reversed' first.

It's good for checking general directions, I think, though I haven't yet tried checking one direction from another. I guess I'm still concerned that my mind will interfere.

Could your book have liberated itself? Say, on a park bench, or in a coffee shop (herbal tea)?

Maybe someone returned it to the library for you? (Check if it's back on the shelf.)

Maybe a sympathetic librarian will let you work it off...if there aren't any dishes to do, you could check the order of things on the shelves, or shift and carry. Make dinner for someone.

There's gotta be a way! It's not like you misplaced it on purpose...you haven't even read it yet! That's gotta be worth something.