Mei is in it and the more brutal the better. She understands that pleasure is meaningless without the pain to choose it. She doesn’t just want to please Sister Dee. She desires Sister Dee to have the ability to revel in it all. Each time Mei recoils from the pain, every time she cries out for longer or for mercy, then it’s all for Sister Dee to enjoy. There’s absolutely not any guarantee of benefits, only an opportunity to make her new mistress happy.