This mistress was out to make her paypig cum. The reason for her doing so was simple. She wanted him to at least enjoy himself since she was always enjoying his money. She did not want to fuck him but she still wanted him to have a great time. That is why she used her charm and her naughtiness to make him have a great time and for him to cum.
Princess Fenja was bored and she needed to find a way to enjoy herself and to pass time. She noticed her paypig was not doing anything and she knew that she had found what to do. She chose to tease him and to make him do some naughty and crazy things for her own entertainment. The guy had no choice but to do all that she wanted him to do.