Question on Family and Friends' Influnce on W

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Last December my wife lived a psychotic event with hallucinations that lasted for one week.
I later found out that the God-Mother of my oldest son, which I knew for more than 10 years and considered my friend, was the immediate cause of such event (of course there were other causes, my past behaviour being the most important).
I work in a different town from the one my family lives in. The God-Mother was alone with my W in our living room, went to my computer and asked my W: you see this cable (she showed one of the cables connected to the computer)? It's connect to his work and he can follow everything you do at the computer. This just cracked something inside my W's head.
My W is now fully recovered, but has other friends she respects very much telling her to get divorcedbecause a husband who spies his wife does not show any respect to the spouse.
I have come to the conclusion that a) you cannot do anything about it, apart from becoming aware of who are your friends; b) ultimately, it is my W's choice to listen to her friends and follow their advises. She might be influenced by them, but she still is capable of taking her own decisions.