No, she's a Catholic.
(But so is POTUS. )
SEVEN of the current Supreme Court Justices are Catholic. There's also a distinct regional bias when it comes to appointing justices. There are rarely any justices who were born or lived their lives mostly West of the Mississippi.
John G. Roberts - Roman Catholic (born NY, lived mostly D.C.)
Brett Kavanaugh - Roman Catholic (born lived D.C.)
Neil Gorsuch - (observers are not sure if he considers himself Catholic or Episcopalian) (born CO, lived CO)
Clarence Thomas - Roman Catholic (born GA, lived DC)
Stephen G. Breyer - Jewish (born CA. lived MA)
Samuel A. Alito, Jr. - Roman Catholic (born lived NJ)
Sonia Sotomayor - Roman Catholic (born lived NY)
Elena Kagan - Jewish (born lived NY)
Amy Coney Barrett - Roman Catholic (born LA lived DC)
The biggest change we need to the Supreme Court is term limits. The founding fathers didn't envision justices living 10-20-30 years longer as they do now. And each President should be able to nominate only 1 per term. (Possibly two.) And however it needs to happen, politicans like Moscow Mitch shouldn't be able to prevent a President from picking a nominee and having them confirmed.