Sleep, hopefully the chains will not strangle her

Nana made up her mind to sleep in that dinky cell. After all she will have to be her brother's maid, if she doesn't want to face her parents as a failure. Then, she just fell asleep.
The next morning, she arose at 5.12 am. She had been unchained and the cell door was unlocked. She stood up, noticing she still had shackles on her hands, and ankles. Then, after stretching, she walked upstairs, where her brother was breakfasting.
----
"Ah, Nana, do you want to know an interesting fact? Nana means seven in Japanese, and you happened to be my 7th maid. Actually, you were named after that dog character, Nana, from Peter Pan. Now GO DO YOUR WORK!" I told Nana. Still barely awakened, she retorted
"Don't I get breakfast?"
"No, Clean the Yard NOW" I repeated.
"In these clotings, and shackles too?"she asked.
"Yes. Now after you've cleaned the yard, you've earned yourself an extra job for retorting. Clean my legs. Get it?"
" Yes Master"she replied
And so she did. After cleaning the yard, and I was happy about it, she came into the house, carrying a basin of water. She knelt down before me and took hold of my right foot.
"Hold it, 7th girl," I told her.
Clearly feeling hungry, she looked at me with a pleading face.
"I want you to biologically make sure that my feet are clean. Lick the feet then only you wash with water.
Just hoping to get breakfast, she licked my feet clean with an amazing speed. I felt ticklish and felt me about to fuck her, but i had years of self discipline behind me, so I promptly stopped myself and ordered Nana to the dungeon.
Then I gave orders to Wendy, a rather new maid, to escort and chain Nana to her cell and feed her. She obliged.
----
I feel so tired, after cleaning the yard and licking my brother's feet!
Now I am chained, and given a tray of mushroom soup and a thin slice of buttered bread. Wendy left and clanged the door behind her. I slowly took my breakfast as I heard a car drive by. My parents, they're here!
After finishing breakfast, I settled down to rest. I rolled about, then,
SNAP! the chain that fastened me to the wall unfastened itself. I could move around freely! I checked the door, to my surprise, it is unlocked!