The point being, I assume, that as a left-wing person they would be more sensitive to right-wing lies, so that they would get a more accurate model of the world through right-wing media.
...Assuming that is the goal instead of seeking out counter-narratives to fulfill confirmation bias and fuelling the outrage culture that has exploded in recent years (and which online newspapers have learned to feed into they way 24/7 news shows have been doing for years). The fact she summarized it as lies says a lot.