In the Name of Allah, the Most Gracious, the Most Merciful.
As-salāmu ‘alaykum wa-rahmatullāhi wa-barakātuh.
We are sorry to hear of the difficulties that the wife has been experiencing over the past approximately five years. We make Du’a that Allah Ta’ala will remove her difficulties very soon. Ameen.
We advise you to consult with a senior respected member of his family and request him to discuss the matter with the husband.
If that does not resolve the problem then, you should refer the matter to a trust worthy Alim in the locality who is familiar to both the wife and the husband.
And Allah Ta’āla Knows Best
Mufti Saeed Ahmed Golaub
Islamicsolutions.org