Quinton Aaron is still in the hospital ... but it sure sounds like things are looking up, as TMZ just got a great update from his family.

Police are investigating speed as a possible factor in the deadly crash that claimed the life of Caitlyn Jenner’s longtime friend and manager, Sophia Hutchins, according to law enforcement.

Melissa Mae Carlton and her family are dealing with an unimaginable loss ... announcing the death of their daughter Molly, less than two years after their daughter Abigail passed away.