Making my slave clean my feet and swallow cum through her nose part 1/2

We were starting training and, surprisingly, she was very obedient, perhaps because of her 18 years at the time. I start by making her clean my feet with my tongue and then I put hard on her throat until I cum and make her swallow cum through her nose. To finish, in part 2, I take her like a dog on a leash to the bathroom and make her a human toilet.