A few years ago, a neighbor (not that neighbor!) lost their son shortly after he graduated from high school. He was driving a car with his friend way too fast; it hit a tree and both boys died.
It tore the family apart. The mother crawled into a bottle to the point that she was hospitalized for more than a year. They have since divorced.
No, children are not meant to die before parents...

Many hugs to you and your girl....