Research on family communication and mental health has largely explored parents influence on childrens psychological distress. Less is known about how family members promote each others psychological wellbeing. Grounded in family systems theory and emotion regulation theory, this study investigated the direct and indirect relationships between mothers and their young adult childrens attitudes towards negative emotions, conciliatory communication during conflict (i.e., explanation, forgiveness seeking, negotiation, collaboration, compromise, nonverbal exchanges, and humor), and mental health outcomes. Three hundred and nineteen mother-child dyads completed close-ended online questionnaires assessing their own psychological wellbeing, emotion coaching, and conciliatory communication behaviors. Results indicated that mothers and childrens self-reported emotion coaching practices were significantly and positively associated with each others. Additionally, family members emotion coaching, conciliatory communication, and psychological wellbeing appear to be directly related, but there was only limited evidence of indirect effects through ones own or ones family members conciliatory communication