I immediately think of
Harry Potter, but I was a superfan when I was younger and since she was a minor character, I'm sure most people wouldn't have that association. I also don't think it's a bad association anyways, and it's not one of the more iconic names from the series. As a name, it's a little dusty for my taste personally, but I think it's cool and would be a fresh take on some more popular
Ros- names.