It would be a violation of HIPAA for a medical system to disclose that to a private individual. The State Health Services or TCEQ would need to conduct that investigation and ask those questions. Both of those are state level agencies and would require significant momentum for a small town like Trinidad to trigger their attention. Ironically, it sounds like her social media post and the Streisand effect around it have triggered a TCEQ boil water notice and (likely) an investigation.
It is absolutely bizarre for a municipal or county law enforcement agency to take interest in this kind of thing. Texas Rangers and federal authorities should be looking at what triggered her arrest and whatever investigation came before it. That's assuming Greg Abbot, Dan Patrick, or Ken Paxton haven't totally compromised them at this point.