remember, that any bad action on her (the believers0 part, such as "gas lighting" you could be a defence mechanism to bolster, maintain her indoctrinated status.
Agreeing with you would be admitting that it is just possibly that wt, from the talking snake onward, is totally wrong*. better to humour her, gently.
*** without the strong pro-family stance of wt, tainted as it is, or that of any other group, you might not have a wife. these days. ( one of the strong draws of daesh/isis is just that, apart from the many virgins of martyrdom)