I thiiiink it's just this one, but I guess we should take a closer look to be sure. It clicked like that when I did this--

[She says, and pushes the jagged end of the broken bone into the notch again, until she feels it catch against something on the inside and the quiet click rings out again.]

It does kinda sound like a lock.

[Which almost makes her want to laugh a humourless kind of laugh, because fuck knows she's had some experience with weird locks and keys that open onto shitty things that were better left undisturbed. She pulls back a bit, to give Claude a chance to take a look.]

What do you think?

[And whilst she waits for him to examine it, she adds, almost as a belated after-thought.]

And yeah, back to what you were saying just now. I've had like, zero luck trying to get a message out so far.