Her expression of faith is irrelevant when her actions are immoral.
And that's separate from the incompetence, like taking out dictators across the Middle East and assuming democracy would arise.
Instead, Egypt elected the Muslim Brotherhood who started passing Shariah law provisions until ousted by the secular military.
Took out Quadaffi, now it is a failed state letting many terrorist groups work there.
Drove out President of Yemen, now failed state in civil war.
Tried to take out Assad, didn't recognize that Russia would protect an ally that gave it a military base on the Mediterranean, creating a new Cold War with Russia we didn't need AND arming "militias" against Assad resulted in the rise of ISIS fighting Assad in Syria and fighting the secular government we set up in Iraq to create the Islamic State (ISIS).
Clinton is responsible for taking out bad guys who controlled even worse Muslim fundamentalist groups in the Middle East, which is why Boko Haram's "bring back our girls" hashtag campaign was even a thing, ISIS, Al Shabab and a dozen other international terrorist groups are a problem rising instead of declining.