Twin Sister Monologue

I know this Is wrong. I know the consequences of murder. I know that I shouldn't be thinking of murdering my twin sister. But what can I do? She's left me no other option.
My sister, Allison and I are identical twins. No one could ever tell us apart. When we were younger, it was like we were one person. We had every little thing in common. The same interests, we had the same clothing styles and our names sound alike as well Madison Allison. She was my other half. But now, things have changed. I hate her. She always got her way, she was always mom and dads favorite, she’s more successful than me. At that point I didn’t hate her as much as I do now. I absolutely hated her when my ex husband divorced me for her. He was my everything. He thought that I was crazy. He told me that Allison was more of his type and he always liked her better. My husband meant the most to me. He was the one thing I thought Addison can never take away from me. But she proved me wrong. I've reached my breaking point. I've had enough of her. I want to kill her. I know this way isn't the best way. Who kills their own twin sister? But It's the only way to get everything I ever wanted. I'm just going to have to kill her and
Yes, I know that killing your own sister for her identity is just cruel and crazy. I guess my ex husband, or should I say my husband was indeed right. I am crazy. But, now I’ve got everything I always wanted. The perfect home, the perfect husband, the perfect life and there is nothing that could ruin that, not even Allison herself. In the world eyes, tonight was the night when Maddison died while trying to kill her own sister. But only I know the truth. Allison was the one who actually died. Finally, after several years I can live the life I want to. But I must keep in mind that I am no longer Madison. I have to act, behave and seem like Allison. Because the truth is, I now am