I see a suspected case of extreme emotional trauma caused by homesickness and lack of parental warmth. I do not apportion blame, but from the story it appears that both Quincy and Esther have not been in touch with their parents since 2011. Besides, Esther sued her own parents for 300m. Both mothers have said they heard about their grandson's death from media reports. I shall be blunt with this subject. The Bible tells us in Exodus 20:
"Honor your father and your mother, that your days may be long upon the land which the Lord your God is giving you."
There is no substitute for parents.