Travel Through Time and Become Snape's Cousin

A lot of personal settings, I know OOC, and I wrote it for my own imagination. She traveled through time and became Snape's cousin Chen Suining. Her mother was Snape's aunt. She left the family and settled in China because she fell in love with the chef of the Chinese Immortal Cultivation Sect. When Chen Suining was 11 years old, a magic riot occurred. The system of cultivating immortals and the magic system were incompatible and difficult to solve. His parents moved to England and let Chen Suining enter Hogwarts to study. Chen Suining recognized Snape from the first moment she saw him. In addition to knowing Snape's classic dress, they also looked so similar. Snape was simply her mature version. So Chen Suining started her magical life under the nose of her eldest cousin.