The knowledge that she was thus being spied upon gave the girl a sudden thrill, but not of fear.

Instead it served to strengthen her resolve.
There had been nothing in her valise to show who she really was, or why she was in Haskell, and consequently, if any vague suspicion had been aroused as to her presence in that community, the searchers had discovered no proof by this rifling of her bag.
She examined the room thoroughly, and glanced out into the still, deserted hall before bolting the door.

The cracks in the wall were scarcely wide enough to be dangerous, yet she took the precaution of shrinking back into the darkest corner before opening her hand-bag and extracting the letter.

It bore a typewritten address, with no suspicious characteristics about the envelope, the return card (typewritten also) being the home address of Farriss.
Farriss's letter contained nothing of interest except the fact that Enright had also left for the West.

He instructed her to be on the lookout for him in Haskell, added a line or two of suggestions, and ordered her to proceed with caution, as her quest might prove to be a dangerous one.
Miss Donovan tore the letter into small bits, wrapping the fragments in a handkerchief until she could throw them safely away.