Saving the Little Sisters rather than killing them not only gives you a better in ending, but over the course of the game is more maximal from a gameplay perspective.
Although beta blockers may hold some promise, the most important thing to do for someone who has experienced a trauma is to get that person professional help as soon as possible so that he or she can get maximal (and personally tailored) help.
Although both the 1933 and the 1934 Acts proscribe various types of conduct, including incomplete or inaccurate disclosure of material information, as an administrative matter the SEC, through its rule-making authority and its regulatory responsibilities, dictates the specific kinds of minimal (and in some cases maximal) disclosure required by the specific provisions.