My grandmother's things in the lake

Date: 1/20/2021

There's a lake or resivoir that's made of concrete and in front of a bunch of stores like a parking lot would be. I swim out into the water looking for something. My father is in the same, looking for something left behind. He pulls out rose quartz dipped in gold paint. It's something his mother left. Without her, he fears he'd be completely alone. By the end of the dream, i get word of her passing. It was expected from me but he takes it terribly and swims out into the water. I do my best to help him find anything she's left. There's a group of my cousins and friends on the beach and the ask what we're looking for. He says she threw in something insignificant ages ago but he wants any connection to her. He fears for the first time that he truly has no one.