I think Jaal has nightmares of seeing his family be exalted.
How could he not? After seeing that, watching it happen, his dreams keep on putting his family in that stranger’s place. In one the Moshae is turned because they were too late, they were always too late. In another it is one of his mothers, as he opens the door to his childhood home to watch her turning into something else before his eyes. In a third, he finds his siblings in a facility, snarling back at him, and he can’t lift his gun, he can’t.
He tells Lexi about them: there’s no shame in nightmares for him. And she helps him out the best she can but the nightmares do show up every once and awhile. Not as much as they used to, but enough for him to be awake some nights fiddling with tech as a means to keep busy.
(He finds Ryder awake at that hour too. Unlike Jaal, Ryder is not so open to discuss what terrors they see in their dreams. Jaal isn’t going to push. But when they want to tell him, he’ll listen)
Time passes. The Tempest becomes a home of sorts, free from the legacy of his family’s achievements. PeeBee and him discuss their various projects. Vetra is always willing to talk about the trials of little siblings. Cora is delighted at someone being awed by her biotics instead of afraid. Liam and him share movie after movie. Drack tells him stories of the Milky Way and Jaal tries to fit those stories with the people he knows now. The bridge crew talks to him, and proves excellent conversation partners, from Suvi’s interest in science, Kaello on what he loves about flying around, Gil about their respective tinkering.
And Ryder, well Ryder is family. Jaal made them as such when he invited them home. Alien or not.
He goes to bed one night and sleeps. The nightmares return. But this time, as he enters the facility his family is not transforming before his eyes. It’s the Tempest crew. And at the center of it, reaching out before they change them into something else, is Ryder.
There are different types of families. Jaal fears for both of his.