Why!?①

There's some personal stuff mixed in here. I'm estranged from my maternal relatives due to various issues. Things had soured even before my grandmother passed away, leading to estrangement... One day, while at a clinic in the next town for my tendonitis treatment, I ran into the daughter-in-law of my mother's aunt and uncle, who live next door to my mother's family home. She then informed me that my grandmother had already passed away. She seemed to understand the situation between us and my grandmother, so I thanked her for letting me know what I didn't know. When I told my mother about it after returning home, she was angry, which is understandable... she was her own mother. It left a bad taste in my mouth. I had a dream related to my grandmother a few years ago... My grandmother was feeding snacks to a baby in a stroller, with two boys behind her. They were my cousins, my aunt's sons. In reality, they're probably fine middle-aged men now, but in the dream, they were kindergarteners. For some reason, my grandmother wasn't looking at them and was only giving snacks to the baby. Even though she doted on them so much when she was alive. And the baby my grandmother was feeding snacks to was a dead baby... lifeless, pale blue all over... I knew immediately it was my aunt's child.