"You don't really understand human nature unless you know why a child on a merry-go-round will wave at his parents every time around - and why his parents will always wave back". ~William D. Tammeus
1. Kindly read United Nations Convention on the Rights of the Child (UNCRC) to understand what nature of this violation it is actually instead of it being generic referred as "Human Rights Violation".
2. In many Indian families the asked que. is coming out of the closet, since the Child rights overrides one spouse control over a child's best interests the simple way out at begining stage is to take wife for counceling with professionals so that she learns effects on child on alinating a child from the company of grandpaprents which is not in the best interets of the child.
3. If the above soft method fails then grandparents may simply move an Application under GWA using Section 12 and ask for proper "visitation of grandchild" with grandparents. But this method may bring in legal rebuttals from her side and may turn into ugly custody battle lalter on so be educated enough to understand child rights and welfare of the child first and be cautious and act wisely by trying softer methods first.
Rgds.