The reason Sophie Asanami didn't contact me until now was because she wasn't sure if I really was who she thought I was.
'Can "Oscar Itou", presumably the Concept of Truth, help me defeat the Concept of Space?'
Her information wasn't solid enough to form a definitive answer to that question, and if she wasn't at least half sure about that, then she didn't even want to consider taking the risk of someone unrelated to the matter being privy to such unnecessary information.
There was also a chance that Saburou himself could find out she was coming for him, after all, and if that fact comes around to make itself known to Professor Kazuki Asanami, which it inevitably would, then her plan would be shut down in a miserable failure at that exact moment.
That's why she waited and, fortunately for her, an opportunity eventually presented itself.
That was, the train station kidnapping event.
