Your mother in-law would be told its propaganda from Satan.
It means injustice. There must be two witnesses to an accusation, as per a warped biblical interpretation. (Almost never happens). Unless there are two witnesses to the molestation there can be no action of censure by the congregation toward the accused. This results in the vilification of the accuser if they refuse the counsel to NOT talk about it again, instead they are told to wait on God for justice because "He knows". This is true no matter how old the victim is. Until recently Elders did not report to police any accusation. They still are told to call the headquarters legal department for advice before acting on any accusation.
Often victims who speak out are expelled from the congregation and perpetrators go unidentified or expelled. Go to YouTube and search Australian Royal Commission on Child Abuse. It will shock you.