>>112189331>how is they're in the same universe againPG is native to Earth 2, the world of Golden Age DC where the heroes all got older and some had successors.
When Crisis on Infinite Earths happened, she, along with most of the JSA were folded into the history of New Earth.
Editorial mandate was that Superman was the LAST Kryptonian, so she got bounced around a few different excuses for her powers, including Atlantean heritage, but her proper history came back eventually.