Real Mother
The Starship could be considered to be Cynthia's magnum opus, the greatest blueprint she had ever constructed and the best Craft that she had ever been a part of. Even so, there were many faults with it, most of which surrounded its shrunken size.
A regular Starship was capable of lasting without a replacement of its core for at least a decade without issue, but Cynthia's could only last a single year. This was still not bad as a year was a relatively long time in the scale of a war, at least. However, this 90% drop was something that hurt quite a bit.
The reason for this was that because the core, a fusion core, was an object that simulated the power of a Star. It was extremely powerful. The amount of power within it was obscene, if it wasn't like this, how could it power such a large vessel? But it was also ironic because of this that the fusion core last a shorter time on this modified starship, rather than longer despite its smaller size.