Thanks Mo2. Already happened. I did it simply to validate her (the wife's) reality. Some things, even when quoted to you second-hand, are simply not acceptable behaviour. And ok I think to myself, would this person have exaggerated? But some things, you simply know are true, and you have to state your opinion. Someone has to tell the truth, when that truth is helpful to the one asking/telling. Consequences: wife feels understood, hopefully (SSOOLaw probably agrees with me); if the MIL somehow found out, good, she might want to explain her words, which were frankly spiteful, demeaning, and incredibly illogical. It's the illogic that says most to me.
Bean:
the mother is requesting visitation after a year? - I'd get her to go through the courts and let them decide. I wouldn't do anything 'casual' with a compulsive liar simply because you cannot trust them with anything. I'd make it legal.