The most important thing is to have a psychiatrist to exam her to rule out other diagnosis.
Treatment is using anti psychotic medication and slowly and eventually they become less troubling and may disappear.
Unfortunately, in the time of your husband's father, they diagnosed Bipolar 1 as schizophrenia. So don’t worry about your fears. Your intelligence can be satisfied by a psychiatric consult from a wise psychiatrist.
I discovered anti-depressant pills in my daughter's cupboard yesterday. How should I confront her on this?
I will wait and respect the daughter’s privacy.
Anorexia is complicated eating disorder and a speciality and not as simple and need a well qualified expert to treat it.
There are weights that become dangerous to go below. I advise a well qualified eating disorder specialist to evaluate thoroughly and see if a councilor can help, but under the psychiatrist “WHO IS EATING DISORDER“ specialist and who treated this disease.