Earlier quoted context omitted.
As a technologist, I don't think I have a responsibility to the daughter's parents, either to do anything about the situation or to explain anything about it. I do have a responsibility to the daughter to get her the help she needs; that help is potentially not from her parents.
Great thanks for proving my point. Let’s replace technologist by medical professionals and you can see immediately that parents consent is required for most medical procedures barring edge cases where doctors get a court order. Oh also COPPA exists for this very deluded thinking that “technologist” like you have.
Many states allow minors to receive mental health treatment without the consent of their parents and allow those minors to retain confidentiality.