[The look on Sephiroth's face causes his fury to evaporate for now. Furious as he is with Hojo, ultimately it is most important that Sephiroth is given the truth, however much he will choose to believe.]

...Hojo will say about anything if it is to his own interests in doing so. I suggest you take his words with a grain of salt, if even that.

Your mother was a scientist, working to study an important subject with Professor Hojo. She was the person I admired and respected most, dedicated and working even when she should have been resting.