My exfriend posted porn of me and my mom thinks I did it
Hi I'm not sure if this is the right place to look for help but I am in need of help right now. This happened a few months ago back in October when I went to my friend's house for a sleepover. She is not my friend anymore because of what she did of me. I was still sleeping and it was morning she woke up and then while I was still sleeping I have no idea why she did this, she lifted my shirt and took a picture and then posted it on the internet I don't know what website but on the internet! Then she told me and I saw the picture she took on her phone and I was furious like why would she do that! She said it was for fun, but even worse, she said she tagged my name and said it was my picture and now I am mad. So after that we broke up as friends.
Around 3 days ago my mom found the picture that my exfriend posted of me and then she got really mad because she thinks I posted it I did not and she yelled and screamed and punched me and asked me why I posted it I said I did not and she said I'm lying because she thinks I did and then I asked her what site it was on and she said I should know because I posted it but that is not true and I said my exfriend did it and she said to stop blaming it on her just to cover up what I did! But I was innocent and she won't believe a word I'm saying! She is now punishing me for this. I understand why she's mad, but what really hurts me is the fact that she doesn't believe me, it hurts a lot. I cried for hours after it happened. She won't believe the truth and I am being punished for nothing. She told my dad and now both parents are angry at me and kept yelling at me at the dinner table that day and I feel so alone because it feels like it is 2 against 1, I am standing up for myself and when I am against my parents in a situation like this, I feel like they are 2 huge monsters attacking me, the size of a crumb yelling, and just blabbering all this stuff at you. It really hurts a lot!
Now I'm having to face the consequences. She says I have to write a 5 page letter telling her why I posted porn, why I lied to her, and tell her I'm sorry for what I did! What do I write! I don't know what to do if I tell her I didn't so it, I am telling the truth but she won't believe me. If I tell her I did it (which I really didnt) , then she will believe me but I will be lying! What should I do now? I'm really scared and I just can't stand her anymore. She is driving me beyond craziness and I feel depressed. I have been crying myself to sleep and I am scared to come home everyday after school. I keep crying over this and can't get this out of my head! There is a hole in my heart - a big one. And I need someone that cares and to fill it up because I feel really depressed and need help. The pain just won't go away. What do I do?