story for my language GCSE paper it is unfinished but would like feedback

Ping after ping. Message after message. As I glanced over my shoulder, my phone was dancing with vibrations of incoming calls. I snatched it from the corner of my bed , bewildered. I had never felt so significant before.
“Hello?”
“URGENT! Answer your calls!” It was my sister. We hadn’t talked since 2019, the year I moved out of my parents home. What could she possibly want? A case of nerves were weighing me down as I was building my courage to answer , thoughts and questions stacking on top of eachother piece by piece like a 3 tier wedding cake. Anxiously , I clicked on her name and pulled the phone closer to my ear. Listening to the resonant sound penetrating through my eardrums , while waiting for her to pick up.
“Hi , he-llo” she answered while weeping.
“What’s happened? , you good?” I asked.
“Sh she’s gone, mum has gone”
I got a knot in the pit of my stomach when the news of my loved one was announced. I froze. I could feel my heart shattering into shards like glass.