The Raven is the ship that Gaal was on, right? It exploded? When did that happen?The Raven explodes after Gaal leaves. So Hari’s hologram won’t make it to Helicon to star the 2nd Foundation. OTOH Gaal still has the device containing Hari’s recorded consciousness… not gonna try to predict how that will end up but it’s interesting.
I thought that she destroyed the Heat Exchanger so that she wouldn't be able to survive the temperature increase in the ship ... to force hologram-Seldon's hand. I assumed (and I think she even says it) that the ship would still be able to get to Helicon on it's own.