You seem to be a very caring friend. Coming to your friend, people behave the way they are due to accumulated memories of their past, childhood, adolescence, adults ect,. It could be good or bad, according to your description above she seems to be having mood swings, change in behaviour patterns and difficulty in coming to a decision. Your concern is very much valid and she might need some life style changes for her better mental and physical health. If she doesn’t want to go to a doctor, there are counsellors, e-mail or online counselling who do not prescribe medication, will be informal, you can even explore the meeting place option with the counsellor for first few sessions, if they are comfortable with it. In many cases only counselling is enough and may not require any medication.
Next Steps
Consult a psychotherapist or a counsellor
Health Tips
Don’t be hard on yourself, you can explain her the benefits to her and what good things may happen to her if she goes through a few sessions of therapy