Later that day, Pamela writes that Mrs. Jewkes has received a letter from Mr. B, and his carriage has returned without him.
Then, she found a letter from the master to Mrs. Jewkes lying around unattended. Hmm . . .
In addition to containing lots of threats and nastiness pertaining to Pamela, the letter indicates Mr. B has gone to Stamford to deal with the Mr. Williams situation and would be gone until the following evening.
Sweet! She can sleep easy tonight.
Pamela read, transcribed, and replaced the letter in its original spot just in time for Mrs. Jewkes's return.