Hillary and her team know they'll get either mud-slinging Trump...or fake wannabe Presidential Trump. I'm sure she's prepared for the fake Trump being that his campaign has somewhat put him on a leash these last couple of weeks. They want you to believe that Trump is gonna go on stage acting a fool and the stupid Media is eating it up.
All Hillary has to do is push her message/policies, fact check Trump when he lies but also get under his skin at the same time. He'll be able to take for about 30 minutes but after that he'll slowly start to lose it. Plus the environment is different.
This is Hillary you guys

She knows what shes doing. She kept both Obama and Bernie on their toes and they are much better debaters than Trump with way more knowledge.