Back to Pamela's letter-writing, although she's not super hopeful of being able to send anything at this point, so this letter is essentially like a journal entry.
She goes into a lot of detail about how her departure from the house went down (short version: everyone loves Pamela and was super sorry to see her leave).
Then, she describes her surprise detour and the steps the coachman, Robin, took to deceive her.
Once she was wise to the trick, she tried to figure out ways to escape, but to no avail.
When they stopped for the night at the house of a farmer (who was also the master's tenant), the master had a letter delivered to Pamela apologizing for the deception and promising good intentions toward her.
Unsurprisingly, she's not convinced.
The master also sent a letter to the farmer and his wife spinning a version of the same tall tale he had told Pamela's parents, so they inclined to help Pamela escape.
Pamela hoped there might be another opportunity to enlist the help of a stranger when they stopped at an inn for dinner. However, as luck (or lack thereof) would have it, the mistress of the inn where they stopped is the sister of Mrs. Jewkes, the housekeeper at the master's Lincolnshire estate (i.e., her destination).
When Pamela asked the mistress for help, she met Mrs. Jewkes herself, who had been waiting there for her. Mrs. Jewkes then took Pamela back to the Lincolnshire estate.
Once at the house, Pamela told Robin off for his hand in deceiving her and helping to assist in what she believes will be her ruin, managing to make him feel pretty bad.
Pamela is not too impressed with Mrs. Jewkes and perplexed that Mrs. Jewkes insists on addressing her as "Madam." Turns out, she's been ordered to do so and affirmed it was only proper, since she believed Pamela might soon be "Mistress of us all" (36.65).
Also, Pamela will apparently be sharing a bed with Mrs. Jewkes. Cozy!