Sissy of the House: A Gift for Master - Sissy of the House

My master had been spending long hours at work and Mistress was worried about him. So she sent me, their gorgeous and sexy Sissy of the House, to make sure he was ok by giving him a gift - the gift being me (ready and very willing) to be f*cked by him. But how would he cope with me appearing in the office? And would I be able to fulfil the task my Mistress gave me?