Family making bets?

Once again I found out my mother and idk who else are making a bet when my son will be born.
With my first she got it right she had told me my daughter and brother will be sharing the same birthday and she was gonna be born on his birthday and so the day came and she was born on my brothers birthday kind of scary how she knew. I spoke to her last night and she told me she gives me up until April 15-20 but no later 😨 I'm afraid she will be right again