>>108686916She changed a whole bunch of other stuff, like her waiting animation, that make her look older than when she debuted.
It coincided with monetization issues and people on Twitter making a fuss about her pandering to lolicon.
It could also be because she felt like her model made her look younger than she felt comfortable with and wanted to adjust it to be closer to Gura in age, but that's just my speculation.
Take your pick, your guess is as good as anyone's.
