Mother: Darling are you at home? Can I pop in?
Tina: Hello mum. We're still in bed.
Mother: Oh dear! I'm sorry to have woken you up darling.
Tina: It's alright mum. I'll give you a call later. OK?
Mother: Certainly my dear.
Mother wants to pop in but Tina is still in bed. Tina will give her a call later.