This is all true!
The thing is, Hillary needs to hit him every time he does some glistening generality or random bullshit. Like, if he says "Believe me, I'm going to bring back 24 million jobs in six weeks. Believe me." Just hit him "How? What, specifically, are you going to do, Donald?" If the moderators won't follow up (which I think they will because, seriously, someone wants to get him on something), then Hillary needs to.
There's little risk for her because she knows goddamn everything. Seriously. Random statistics about unexploded land minds in Laos. She knew the correct answer off the cuff! Just let him keep getting into word salad. Try and get a Reagan type "There you go again, Donald."
Debates is where she shines. Big speeches eh not so much maybe. But, seriously, just let Hillary be Hillary in a debate. Trump will MAYBE do one.
Also!
She needs to hit him with specifics. If Trump says "Crime is way up!" she needs to hit him with the exact numbers. "This is not true, Donald." If he says illegal immigration is up, hit him with the numbers "Again, Donald, this is not true."
Every time he says something, you have to chip away with facts. It fits her persona. She's the wonky person who sweats the details.