[Margaret looks increasingly alarmed as Sherlock steps towards her. Instinctively, she takes a step back--perhaps larger than intended, trying to now keep a healthy distance between herself and the clearly unwell individual before her.]

I--Nothing untoward, Mr. Holmes! [She stammers out, trying to put her hands up in a show of meaning no harm--as if that might calm him down.] It was--Well, the one that stuck out to me was "The Hound of the Baskervilles," the one with the dog, and the moors, and--

[The details escape her as the man bears down upon her, but she tries to adjust her strategy, hardening her resolve and tone.]

I promise, after reading it, I held nothing but admiration and awe at what you've experienced!