Apologize and explain

Mum   Laia! What's going on?

Laia   What's the matter? What have I done?

Mum   Look at the time. Have you been up all night?

Laia  Sorry, Mum. I didn't mean to. I didn't realize that it was morning.

Mum  Laia, you know I don't like it when you spend so much time on the internet.

Laia   Well, it hasn't happened before.

Mum  Laia! It's the third time that you've spent all night online!
Laia   OK. Listen, I'm really sorry. Don't worry. It won't happen againg, I promise.

Mum  I hope you're right. We'll see.