I think Flutter's ability to conceal her identity from the general public is overrated. The only discernment she's known for was at the Animate! Raleigh convention, when she spotted individuals in the distance taking photos of her without her knowledge, forcing her to wear a mask to camouflage her face. I highly doubt that she, or Chris for that matter, are aware of the recent information gathered against them, such as knowledge of their stay in Finland or Flutter's supposed native residence - unless she frequents Kiwi Farms, or Chris's subreddit, but that seems unlikely in my opinion.