Lara told Kal that she gave birth to him. This does not match the series premiere, which showed a gestating fetus in Kal's travel pod. Maybe Lara just meant that phrase in a non-standard sense without going into medical details that would have been really awkward for that conversation. Maybe it's a continuity error. I wonder, though, if this Lara's mind and memories are some sort of holodeck reconstruction rather than a genuine copy.