SOLVED. Fiction: Girl uses experiment to bring grandma back to life. [s]

[Vanessa]

I read this book last year (2019) It’s about a girl who lives in her grandparents house with 3 male roommates. She has an experiment machine in her basement which is supposed to use DNA to create a baby clone of said DNA. She puts a cloth with her grandma’s blood (from sewing) in the machine but instead of being a baby she comes out as an adult. She refuses to believe anything told to her. The girl decides to tell her roommates that her “cousin Mary” is visiting.

[Ayshe]

Mary Modern perhaps?

[Vanessa]

Ayshe, Omg yes! Thank you so much!