The term “Torah Jew” is a self-description of Orthodox Jewry. It encompasses Jews who follow the written and oral laws. You aren’t familiar with it because you are talking kookie talk.
But to reiterate a favorite joke: The Saducees were very sad, you see.
Nu? (that’s a Jewish term for “Well?...”) Is your mother Jewish?
My mother was from two Jewish families in Sicily, but we were raised Christian.
The only real Torah Jews are the Karaites; the rest have changed Torah, and thus are “ them which say they are Jews, and are not, but are the synagogue of Satan.” (Rev 2:9)