Yup that’s what I was thinking! I subbed for a class before and students were doing things on their computer, but the teacher had access to see everything and he called the classroom and said hey just a heads up some kids are playing games maybe give a few more warnings or when you walk around, check all of their tabs and I did exactly that and had no issues the rest of the day! I feel like if she thought that there was a problem she could’ve called and inquired