Don't worry Laure, you are doing your best out of concern for your friend and this is commendable.

Question though, how proactive is your friend regarding her health. Has she accepted here diagnoses, taken the bull by the horns, and made a concerted effort to manage her mental health?

When you have interjected about her mental health issues and efforts, what has the reaction been? Is she open to suggestions or criticism? Is she ignoring the problems? Is she being med-compliant?