Many different people can provide professional help to both the child/teen and adult.
Here are a few suggestions to look in to:
Occupational Therapist, Speech Therapist, Psychologist, Psychiatrist, Audiologist, Pediatrician, Equine Therapy, Art Therapy, Accelerated Resolution Therapy, EMDR
In Crisis?
www.hullservices.ca
https://www.woodshomes.ca/eastside-community-mental-health-services/#get-help
Acute at Home https://www.albertahealthservices.ca/findhealth/service.aspx?Id=1065961
Crisis Support in Canada https://www.canada.ca/en/public-health/services/mental-health-services/mental-health-get-help.html