Laurie is your db coach? Sounds like she directed you well. You're really fortunate to have advice so early in your sitch. Good job! Allowing H to be assertive AS LONG as it doesn't interfere with your parental rights (imo) sounds like a good plan.
She suggested allowing him in home/family to remind him of how it could be? Did she recommend inviting these situations? Had an issue with this myself last night.