Kim, I can't believe you would question your strength here. Look at what you did: you laid it out there for H without personalizing anything,you told him clearly what his responsibilites are in this situation, and you totally kept your cool. How awesome is that?! And to top it all off, he accepted what you said because you were so calm and matter of fact about it, and it was OK afterwards.
Michelle tells us that rebuilding the M will not happen overnight. It's a process that takes time. You're doing really well and seeing success. Keep doing what you're doing and be patient.