As for me the lady is not very pleased with this kind of sex! The expression on her face never showed that she liked it. I think she would have enjoyed it more if she had served the men one at a time. And the two of them just bore her. Did the lady enjoy herself? I don't think she did.
You didn't have to torture the master. A man sometimes asserts himself when he subjugates a young girl. At least this maid was pleasantly aroused by his toy.