Mobile Phone Game

I am 14 years old, I charged $600 of internet porn to my moms credit card. i didnt realize i got charged per video… i also cut school a lot to watch them, and am failing math. I hid the credit card bill from my mom when it came, she found it a week later…. I am grounded till the end of the schoolyear for bad math grades, not doing homework, and cutting class. Grounded the whole summer for using her card and having a bad attitude. So thats like 8 months of grounding, i have about 6 more left:(
She took everything out of my room except bed and books. no tv, computer, video games, phone, no going outside even in the yard, no friends over or going to friends houses. I’m grounded to my room literally. I’m allowed out for school and bathroom, and of course extra chores.
meals in my room, bedtime at 8 since i argued with her.
I started to argue and told her I am sorry and i am so bored but she said “I’m glad your sorry but your still being punished. Being bored in your room is what grounding is all about. Thats right, you lost your summer vacation. Maybe next time you wont steal $600 from me and fail math. No TV for 8 months is NOT cruel and unusual punishment, its teaching you a lesson. You want fresh air open a window. You go in your room now and take your punishment.
i hate being stuck in my room, and isnt there like a legal limit to being grounded to your room? She thinks no, grounded means you stay in your room. I have 2 more months left….