REMOVE access to objects they could use to hurt themselves.
DON'T agree to keep their suicidal thoughts or plans a secret
DON’T assume they will get better without help or that they will seek help on their own.
Help them make an appointment with their GP or other professional or
Talk to an adult you trust and get them to help you make the appointment
After the crisis suggest to them to fill out the YourCrew digital safety plan; include a list of people they can contact; fill out phone numbers, these will be live. They can send a pdf of the plan to all relevant people.
Check-in with them regularly to let them know you care and that you are there for them.