A really good punishment,and restraint bench,The receiver of the correction has her bottom in the correct position to receive what ever the Master chooses to use. I agree that this recipient had a very un feminine attitude and a very low pain thresh hold.
I think that the mistress needs to be taught some harsh and painful lessons herself by an experienced Master. I would love to strip her naked and hang her by her wrists with her legs spread wide. I would then take the whip, cane, birch and single tail whip to her until she begs for mercy. When she is bleeding and screaming in pain then she will know how to really train a slave!