Mother in law keeps insisting I will go into early menopause even though I kept my ovaries?

I am 27 years old and had a hysterectomy 12 days ago, removing my uterus and cervix but keeping my ovaries and tubes (which were cut/tied in 2012).

Through all my research and talks with the doctor, I have found that I will most likely go into menopause around "normal" age. Maybe a few years earlier.

It would be possible for my ovaries to shut down in 2-3 years but with my young age its hard to get accurate statistics.

Either way, my mother in law, *the queen of knowledge*, insists I will be having hot flashes and night sweats any day now. And there's no telling her different.

How can I shut her up??