I don't worry about that too much. Clinton's pretty tough. And she's really slick as well. She's an amazingly good politician, maybe second only to her husband and Reagan. She also had hugely favorable ratings when she was Secretary of State.
I don't think even the hardcore Trump supporters truly doubt her skills. Really, they hate BECAUSE she is so good and gets away doing (in their minds) terrible, corrupt things due to her skill as a politician.
In truth time will tell I guess..........