Tough to ignore it. Depending on their relationship, your wife could become very involved in her sister's issues which brings you right into it. Ignore it and you're doing what they're doing: Pretending it'll go away.
Don't know enough to suggest anything but to be supportive of your wife. If you know a good doctor or counselor, or someone who might know someone who could relate or help... you know the drill. Do the guy thing and provide your perspective. If it helps, great.
__________________
There are a vast number of people who are uninformed and heavily propagandized, but fundamentally decent. The propaganda that inundates them is effective when unchallenged, but much of it goes only skin deep. If they can be brought to raise questions and apply their decent instincts and basic intelligence, many people quickly escape the confines of the doctrinal system and are willing to do something to help others who are really suffering and oppressed." -Manufacturing Consent: Noam Chomsky and the Media, p. 195
|