She has stated that she has no intention of running. That said, at what point is there an obligation to run? if you were the only one who was polled to beat Trump and stop him getting a 2nd term.
The hypothetical polls should be ignored. Dees Nuts was polling 10% in 2016, which goes to show you can drop just about any name into a polling question and they will do moderately well based on name recognition. The likes of Michelle Obama, Sheryl Sandberg, and a few others routinely get name dropped because they have allies in media who want to see them run, despite the fact that they themselves are both unqualified and uninterested in anything to do with politics.