Yes, she plants questions in the audience. But no, she can't actually admit it, can she? Here's the classic Clinton response to a classic Clinton gambit:
But the Clinton campaign also denied the practice of planting. "It's not a practice of our campaign to ask people to ask specific questions," said Mark Daley, Clinton's Iowa Communications Director. Daley said that when an event is focusing on a specific topic, such as health care or Iraq, "people are encouraged to ask questions in these regards," but denied that they are given specific questions.
But when directly asked if his statements meant that planting does not occur in the Hillary campaign, Daley could only say, "to the best of my knowledge."
"[Planting] is not something that is encouraged in our campaign," he said.
They don't do it, but they didn't do it "to the best of my knowledge." Get used to it.