That is exactly what she has done. So, although she promised to take back control of our law, the EU court will remain supreme in an important area of our life after we have left (with its judgments affecting our case law long after the eight-year limit).
...Mr Grant’s remaining predictions include that Britain will ask for a bespoke economic partnership and that the EU will refuse; that the EU will try to force us to stick with its regulatory model; that the City of London will be damaged; and that we will, in the end, be offered some sort of trade deal, because the EU doesn’t want the embarrassment of everything unravelling. I see little reason, on present form, to doubt his prescience.