I heard that there is therapy sessions offered by Mood Disorder Centre by Chinese University (香港健康情緒中心)
Your friend can call the hotline at 2833-0838 and arrange for a session. If the situation is pretty bad and she is suicidal, then do tell the operator so that they can speed up the process.
They also offer psychiatric help so your friend may see a psychiatrist first and get some medications while waiting for the arrangement to see a psychologist.