Enlarged Heart Condition. In future?

I have a query about my Aunt who is having Heart Enlargement and age is about 50yrs, she has two daughters. She went through Caesarean section for both the babies deliveries. For the 2nd Baby delivery the Doctors didn't give anesthesia because of her condition(not sure exactly the reason) and without anesthesia they performed Caesarean to bring the baby out, this happened 21 years ago. After 2 years of the Postpartum, she used to feel exhausted, less energy when doing small things, when she was taken to the hospital the doctors found she has enlarged heart, this happened ten years ago from now and doctors mentioned this heart condition is because she didn't fully follow the Postpartum instructions after second baby birth, my aunt is on medications now and doing fine with the enlarged heart condition. I would like to know if this Heart condition is genetic meaning will any of her daughters get this heart condition in future? The elder daughter got ECG 2 weeks ago and it looks normal.