I don't think it's an either/or situation. Both sides have a completely valid point of view. Raffi chose to prioritise saving millions of lives over spending time with her family, and that was valid, because millions of lives were at stake. But from the point of view of the kid who probably didn't get to see his mother for months if not years at a stretch, feeling rejected and neglected is also completely valid. Then after the Mars disaster, Raffi's mental health collapsed and she spiralled into paranoia and drug abuse, and again, that's valid, because mental health is often something completely out of our control, and she knew she was right about the conspiracy, it is easy to understand how that would have eaten away at her until there was nothing left. But again, from the point of view of the kid whose mother has devoted years of her life to her career at the expense of ever spending any time with her family, who is now finally released from that responsibility and at last has the chance to rebuild the familial bond, but instead spirals into paranoia and drug abuse that only serves to tear the already broken family further apart...again, feeling rejected and neglected is completely valid.
Raffi was right all along. There was a conspiracy. But her obsession with that conspiracy was deeply, deeply damaging to more people than just herself. And her son has the right to feel that it is too late to repair that damage, just as Raffi has the right to want to make up for all those lost years. They each have a completely valid point of view, and they each need something completely different at this point in time, which is why they can't (yet) reconcile. That's what makes it a tragic story.
But life keeps moving forward. In time, they might be able to meet in the middle, they just aren't at that place yet.