What does one say?

[Ryft]

That's basically when she said, "I hate when you say the one thing that kept me from killing myself is a lie."

Either you said something to indicate that the existence of God was a lie or you did not. If you did, my response stands. If you did not, then (if I were you) I would have corrected her, "Wait, I didn't say God is a lie." That probably would have made her feel better.