I'm not getting excited because she still has to meet deadlines and meet ballot access requirements in each state in order to run.
For example ... the first filing deadline for Alabama was November 8, 2019.
Just weeks away is the Iowa Caucus on February 3, 2020.
She also has to report campaign finances.
She has missed most of the debates; but that will probably be a good thing for her because I doubt she has the stamina to debate.
It may be that she has done all these things without actually announcing that she's running, but I think it would be very difficult to keep that quiet.
I still don't see her running. IF and when she announces that she is actually running, then I'll believe it.