Inclusion Criteria:  The following is a description for the inclusion criteria for aims 1 and 2 for caregivers participating in this research study.  Eligible caregivers must be the parent or legal guardian of a youth who is:  currently detained; 12-17 years old; has an identified substance use or substance use and co-occurring mental health need; and is scheduled to be released into the community to the care of the enrolled caregiver.  The following is a description for the inclusion criteria for aim 3 for system stakeholders participating in this research study.  Eligible behavioral health providers (e.g., substance use counselor) must:  Provide substance use or dual diagnosis treatment justice-involved youth and their caregivers, be over 18 years old, and speak English fluently.  Eligible juvenile probation officers must be:  18 years or older and speak fluent English.  Exclusion Criteria:  Exclusion criteria for all participants includes:  lack of proficiency in English and cognitive impairment or active psychosis which precludes provision of informed consent.  Caregivers who do not have access to a device with internet access will also not be eligible as this would preclude them from being able to participate in the mHealth intervention.