"you can believe in God and be saved and then fall away from it they are still saved"
I guess it all depends on what she meant by "it."
I took it to mean that you could fall away from belief in God, but I guess "it" could mean church attendance too.
My verse would apply to the former but not the latter.
I deny the false belief that one can be saved and then renounce the faith for good.
Such persons were never saved.