The most important thing to do is to reassure the child that the situation is between mommy and daddy and is not her fault. Children tend to put blame on themselves when there is friction in a marriage. Make sure the child understand that mommy and daddy still love her just as much as always and that, although things will change, you will both still be there for her. Do not go into details about the relationship or the divorce itself, but take care to keep her informed about what will affect her. Despite everything the parents might be going through, now is the MOST important time to pay attention to the child's needs as she will need a lot of support and reassurance.