The unwanted daughter

I was rolling in bed yesterday morning when my phone rang. It was my mother.

Frou: Zzz…
Mother: Frou?! Frou??
Frou: Zzz…yeah..
Mother: Are u still sleeping?
Frou: Zzz…yeahh..
Mother: Are you coming home today?
Frou: Zzz… yeahhh
Mother: I think you better not.
Frou: Huh? Why?
Mother: Because everyone’s not free to entertain you. Your brother is out, your dad is playing golf, your sister is not around and I am very busy. We are all very busy.
Frou: Orh...
Mother: So, until the next time!
Frou: Zzz…bye.

5 minutes later, my phone rang again:

Mother: Hello, daughter. So it’s all set already. Around 3pm, meet me at the mall ok? We go look for new curtains.
Frou: Huh?
Mother: Did you hear me? 3pm later. Ok?
Frou: Ma, it’s me.
Mother: What do you mean it’s you?
Frou: It’s me, Frou.
Mother: Oh…
Frou: Did you call me by mistake? Do you mean to call my sister?
Mother: *nervous laugh* Ha Ha Ha. Aren't you supposed to be sleeping?
Frou: Er.. I was.
Mother: Ok thanks! You better go back to sleep! Bye!
Frou: …..