IMO, Jelani must have placed a tremendous amount of pressure on himself -- promising to take care of his mother financially when by her own account, JD was not able to support himself without his family's assistance.
Based on how quickly SM turned on and attacked JD's grad school program director, I'm beginning to think it was more likely that Jelani could not face whatever news she was delivering that day, and instead, he abruptly left campus, picked up some weed, and was never seen again.
An impulsive act? Probably but I also think disappointing his mother was a greater worry for Jelani.
Looking back, I thought it odd that CBD would be badgering JD for his grades which he finally sent a screenshot of to her shortly before he disappeared. Also, if JD sent his mom an altered report -- this might also explain the hate spewed at the director if she provided authorities news inconsistent with what he provided to his mother.
If there were no issues at school, I think his family would have announced that long ago -- like from the rooftops.
MOO