Escape? In our moment of triumph?
Hitomi worked within design parameters until an error lead to them exceeding those parameters.
And however small the risk of a torpedo up the jaxi, the consequences for the death star were catastrophic. (And they had the father of the space wizard on their side so they full knew what was possible.) So maybe, just maybe, they should have provided some mitigation: something that might have limited it to explosions in the interior and a loss of power rather than the destruction of the entire station. Or, if the reactor really was that dangerous, maybe they shouldn't have put it at the centre of the bloody station. Maybe they should have put it on a nacelle.