She snapped "I'll probably be asleep when you get home,"
She didn't ask a question so it doesn't require a response. She's testing him by being snappy. The test requires a response. "Sounds to me like you could use some sleep." Said with a cheerful voice, spin around with your gym bag and head out the door. You acknowledge her, let her know her CB doesn't bother you and you are a busy man. That show's confidence and a little humor. You don't let her behavior bring you down or affect you. But you don't reward it.
"What is best for my kids is best for me" Link to quotes: https://www.divorcebusting.com/forums/ubbthreads.php?ubb=showflat&Number=2879712