Can I adopt my aunt as my mother

My mother passed away 10 years ago. My father left us 15 years ago. I am not in contact with my father. But all my legal documents have my father and mother's names on them. Now my age is 34 and I was raised by my aunt after my mother expired. Now I am married and want to move to UK. I want to take my aunt with me as family just like how I would have taken my mother or father. I don't know the dependent visa process for UK and their eligibilities. I want know if there is any way for me to adopt my aunt as my mother. I know that it sounds absurd. But I don't want to go through the hassle of changing my documents all over. I just want to have my aunt as my dependent. Is there any legal way for this to happen?