i work with a woman who thinks everyone is spying on her or hates her and its getting worse each day, some people joke that oh shes just paranoid but others including myself now feel that an intervention needs to take place before she hurts herself or others. she has admitted that schizophrenia runs in her family and that her two sisters are on medication, how can we talk to her about maybe reaching out for help?
Degree understand your concerns went through your details. I suggest you not to worry much.  From the description it seems that your friend is definitely paranoid. To clarify whether she is schizophrenic, you need to get her assessed by a clinical psychologist / psychiatrist. She must be trusting somebody. Find that person and talk to her through that person. If that person is able to convince her, she could be treated. Treatment is necessary. Please do what is necessary. If you require more of my help in this aspect, Please post a direct question to me in this website. Make sure that you include every minute details possible. I shall prescribe the needed psychotherapy techniques which should help you cure your condition further. Hope this answers your query. Available for further clarifications. Good luck.