It took me few minutes to play one scenario out: EviLottie invites dowager lady into abandoned medical practice and wounds her, lets her kill Lottie, then kills her, waits for Lottie to arrive and calls the police.

But I fail to see what EviLottie can do if lady Swaledale does not come. And it looks indeed as if EviLottie made her disguise not impenetrable on purpose. She surely could have done better.

I’m confused.