Your own answers
Lex did not ask what she had in mind. Since the topic had clearly reached this point she would talk about it, but he had to maintain his psychological advantage. As a baby, every little bit of help counted, especially when dealing with an unknown phenomena that would potentially affect the whole universe. Technically Vera had not said that yet, but if even Destiny could fail, Lex could only imagine that the repercussions were large.
Also, he still did not have a complete grasp of what Destiny was? Was it a rank? Was it fate? Was it the name of a universal escort lady? Who knew?
Vera did not keep him waiting for long.