Silence is how perpetrators get away with being abusive.
The kids already know, especially the eldest.
If the family keeps on the charade, that 1st born will resent them completely.
Also, like water, justice will always find its level. If this is the justice she never had while alive, then its the social justice she deserves.
Watch this then dare tell me that us radical feminists are wrong when we say prostitution is encouraged/treated as inevitable so that society can avoid tackling male sexual violence when it has created a subclass of women to invisibly soak up the majority of that sexual violence.