I get you think she is an idiot, but her mind is fine. Like I said, she's trying to keep the Dems together. That has always been a difficult thing to do. She wouldn't risk moderate and independent support on nothing. She has caught hell from the far left of the party for not pursuing impeachment the last two years. She isn't an idiot, she is very politically astute. She knows she needs overwhelming, undeniable proof to go after Trump. I'd be shocked if she started the inquiry and doesn't have something more substantial than a memo.
The VN replacement for hating on Hillary has not taken control of anything. AOC and Warren are just a piece of the party, same as Biden, Tulsi, and Pete.