Re: off topic question
Hope her recovery is speedy and without complications.
I would be very cautious about suggesting anything until her heart becomes stable. Even "natural" herbs and potions can have profound effects on the cardio and other systems.
Although.... (I hate even to mention this, because of what I now know) I had very good success reducing the number and severity of my hot flashes by eating 2 ounces of tofu per day for about a year - until the worst of it had passed. Soy is very bad for thyroid function, so I'm cautious about recommending it to anyone anymore. I ate it before I knew I had a thyroid problem.
If she wants to try it, she should make sure she isn't borderline hypo, and she should ask her cardiologist just to be extra sure it's ok for her heart.