I'm 100% sure that she's just kidding me.
I put "Ayu's daughter" on google. It found these for example:
1
And some other stuff that's actually connected to some kind of a anime series. I really think that now there's a misunderstood fact. One site also had info of something that included words "brothers" and "sisters". Excuse me? :'D
I even surfed through our beloved wikipedia and that also gave me a name of some anime movie "Ayu's Love Story". There's something wrong with this girl I told you about.
Conclusion: This rumour is a total ********. :'D
And this same fool said two days ago that Ayu doesn't like make-up. What?
If she doesn't like it, she should tell the people at avex no. :'D This so called friend of mine seems to have something wrong. She hates beautiful women. She's always calling them names. -.-