what did i do wrong?

15 the key

We heard the maid call us in. We all ran back to the house. We stepped into the house and saw mom standing in the kitchen. Lucy spoke up after that awkward silence and said " we know about-" but mom cut her off mid-sentance and said "What you saw does not concern you. You will keep your mouth shut. Do you understand?" She asked. "Yes ma'am" lucy and joshua said. She looked at me and said louder "do you understand?!" "Yes ma'am" we all said. "Im leaving to town for a couople of hours. Your father is sick and needs medicine. Im not going to be here to make luch so you will just have to wait till dinner to eat. Your're staying in your room until i return. Ok?" We nodded and headed upstairs. Mom followed behind us. We walked inside the attic and plopped down on our beds. Mom locked the door as the left. We were stuck in that room again. After about 5 minutes of us just sitting there in silence i finally spoke up. "This is boring. Lets do something guys." I said. Lucy walked over to a chest that was at the foot if her bed. She opened it up and called me over to see what was inside. I looked in and saw a ton of craft stuff. It was amazing. She had all sorts of things that we can play with. I reached in and grabbed some paint and paint brushes. I didnt see any paper, though. "Why dont you have paper?" I asked. "When my brother was alive he would write letters asking for help and stuff like that. He would put them in empty bottles and throw them to cars passing by. Only one person stopped, but mom scared him away with a gun." Lucy said "Mom has a gun?!" I asked kind of afraid. "Yup. I've only seen her use it once, though. I think it was so scare one of the maids. She was stealing from mom and mom got real mad." That changes a lot of things. Now that i know that she has a gun, im not as confident about our planning on leaving. Then again, what would happen if we stay here. I put back the paints and stuff and grabbed some playdoh®. I opened it and saw that it was almost dry, but still shapeable. Joshua walked over to the chest and picked out some pipe cleaners. " im gonna try to make a bracelet for you" he said while smiling at me . "Ok, but make sure its purple. I like purple." He nodded and went to work. I was glad that joshua could stay happy after all we've went through. It makes it a lot easier on me. We stayed in the attic for three hours until mom came back. When she came back, she came in to the attic and unlocked the door. I noticed something i had'nt really paid attention to. She always put the key in the left pocket of her dress. She always wore dresses. It was weird. I realised that we never actually thought about how we would leave without the key. We needed. I remember watching law and order and seeing a man get and imprint of a key into clay and the replicating one out of metal. I have the playdoh, but its almost hard. I will have to do it soon. Mom came in the room and told us to get ready for bed. After she left, i told joshua and lucy about the plan. They agreed that we need the key. I knew what i needed to do. I just didnt know how.