The key here is that when the fake Hillary, comes out of the luxury building where Hillary's daughter lives, there is no one with her. No aides, no doctor, no black mystery man with the epipen, and most conspicuously, no Secret Service. The Secret Service doesn't protect body doubles. They're sworn to secrecy about the candidates comings and going, foibles and frauds, but their job is only protecting the real candidate, not participating in the frauds that the candidate tries to pull off.