FBI: No link between Trump and Russia
In short, Hillary likely knew better. We also know from emails released by WikiLeaks that the Clinton campaign plot to smear Trump with the Russian ties allegation went as far back as April. The source on the FBI investigation is the New York Times who has sided with Hillary Clinton unreservedly. The Hill:
Amid multiple reports drawing different connections between Donald Trump's campaign and Russia Monday night, The New York Times reported that FBI officials' investigations of the GOP presidential nominee have yet to confirm any ties.
FBI officials said their investigations have yet to find a connection between the GOP presidential nominee and Russia.
The bureau has been investigating the Russian government’s role in the U.S. presidential election. But the FBI believes that the country was likely trying to disrupt the overall race and not trying boost Trump’s chance of getting elected.