Struggling Friend

Has anyone else ever had a friend who struggled with self-harm and suicidal thoughts/actions? How did you help them? What I can I do to be a good friend? I reassure her all the time and am constantly telling her/showing her how special and important she is. I’m just at a loss as to what else I can do. ☹️

*please note she goes to counseling. takes meds. Etc.

*i guess I should also note that she has actually has tried (and failed) once to commit suicide.