She cogitated over the situation and tried to work out the mental arithmetic of it.

Trains were infrequent on the Russian railways, and she had no means of estimating when the burly ruffian who had planned and executed the robbery would get back to St.
Petersburg.

There was no doubt that he had not the right to open the letter and read its contents; that privilege rested with some higher official in St.Petersburg.The two men had got off at the first stopping place.

It was quite possible that they would not reach the capital until next morning, when the Berlin express would be well on its way to the frontier.

Once over the frontier she would be safe; but the moment it was found that the purloined envelope merely contained a copy of an English newspaper, what might not happen?
Would the Russian authorities dare telegraph to the frontier to have her searched, or would the big official who had planned the robbery suspect that she, by legerdemain, had become possessed of the letter so much sought for?
Even if he did suspect her, he would certainly have craft enough not to admit it.