Religion for her became the perfect excuse not to think criticaly.
this is probably very true. it does make life a lot simpler, actually. a fair percentage of christian faiths openly speak against free thought and science, and proclaim that they have the only truth, and you have to take it from them. for this reason, several christian churches are even on cult-watch lists.
but there are christians who use their brains. it's not an easy out for all of us. how do you reconcile knowledge of geology, history, literature, etc, with an interpretation of the bible that says it's all perfect, written by god, and absolutely literal in every respect (except where later documents have changed it)? it takes thought, and it's hard to go back once you start down that path.
eventually, you analyze every aspect of faith. some reject it, some grow stronger, but both parties look on the people unwilling to know more as ignorant sheep.
but that is what church tells us to be, right? sheep. and ignorance is bliss.