…Not trying to dive into the whole 'muh joo' thing but: I recall reading in multiple places that any child born of a jewish woman is considered to be a true jew, according to jewish law. Regardless if said child is/becomes a practicing jew or not.
So there really isn't any such thing as being half a jew or kinda jewish if the mother is jewish.
Also ….I can't sauce this now. It's late and I need sleep