Paranoid Schizophrenia. See a doctor?

You have been able to identify the psychotic symptoms in your girlfriend. If she has never been treated then high chance she will respond well to medications once they begin. It maybe difficult to take her initially, but at least her immediate caregivers and family members and you should see a psychiatrist. There are lot of ways to make her or persuade her to see a doctor as well as medications that can be administered to make her a little more co operative for the treatment. Which city are you from? Need to see a local psychiatrist. Do it soon.

Hi, I think your doubt is spot considering the symptoms you mentioned are typically that of paranoid schizophrenia. You need to explain it to the fiancés family that it is a serious which should not be neglected. If they did so then the possibility of her getting completely cured would definitely reduce and the situation can worsen where it could result her harming someone else or herself. If the concern and care can be communicated in a delicate manner, the family might respond positively to your suggestion. You could also try one of the family members to visit a psychiatrist/psychologist who can provide psychoeducation to the family member thus creating an awareness and an eventual concern to take the right steps for the cure. Hope this helps, all the best.

I request you not to go for a diagnosis taken from internet or elsewhere (which is not given by a doctor). Going by the symptom profile it appears to be a case of psychosis ( schizophrenia comes within it). For proper evaluation, I request you to please visit a psychiatrist. Advice her to take her parents with her.