What does she want?? Help pls!!?

Ok so me and this girl have been textin each other for 2 days now pretty much all day so I text her this morning to have a good day at skool and we have some small talk.. So finally I text her saying I know she's probly busy with getting to skool and stuff so I'll let u do that. Then she texts back haha okk bye.. Wat does this mean? Should I text her or no?? Ps she usually texts back within 2 to 3 mins