Good point here. IRC was also nothing like Twitter or current day social media in general.
We also didn't have the massive amount of statistical evidence in mental health that came to light just recently about teenage social media use, especially in girls. Several times these studies have made it to the top of HN.
She can search YouTube for cats and not get that stuff.
But I frequently think of my kids even for situations they don't directly risk. Call it an empathy gauge.