Resources is Maryland

I recently received co-guardianship of my niece with my husband. I’m trying to find local support services (mainly for myself as I carry the most caregiver responsibilities). I’d like to find a group who can help me navigate integration of related child which is uniquely different as she’s known us as uncle/aunt her whole life! She’s already in weekly counseling both at school and outside. But I can’t seem to find support for myself!