She normally would be out in 24 hours (not 2 hrs) but with the infection it depends on how well it heals. My son and niece had theirs done at an early age years ago when technology kept them down longer and they were out of school for about a week. The way things are now she probably could go back to class as long as easy in a few days but with the infection it'll take longer. If she hurrys things she'll prolong her healing time. I'm sure alot of her class stuff she can catch up with online and she can contact her teachers online as well. Good luck; it's not easy trying to keep the young ones down.