Linda Park, Earth One, didn't exactly make for a convincing Doctor Light (although it did give us those excellent cardboard figures, and some brilliantly corny dialogue from her and Barry). However, while she was busy pretending to be Doctor Light, the whole issue of the real deal kinda got lost. She made herself invisible in order to escape STAR Labs and a possible showdown with Zoom, hence why the Linda we know had to step into the jacket and headwear. After that, not much else is really said about the missing metahuman. Is she simply going to stay invisible for the remainder of her days, or slink back to Earth Two and try to live in anonymity? Or could she return again later down the line?