I was never told what the Shaman's name was and revealing it if I even knew may disturb their privacy, but he lives either near or in Charlotte, NC. OGs said he's been a successful Shaman for decades and from what I hear, he's really old. My dad's condition improved because of the surgery that took place before they went to NC. Honestly, black magic will not be able to replace ruptured bones or discs and other related health issues. He's still recuperating 'til this day.
I'm glad people like your Aunt doesn't charge. My mom's been a Shaman for about a decade now and she's never charged either. If people really want to pay their respects, they usually just donate a certain amount only because they want to.
Most Hmong OGs are still refusing that the world is technologicall y advancing and should probably seek professional medical evaluation(s). For spiritual interventions, it may be questionable. One must ask themself if they really want to call out other spirits just to drive away one spirit?