The love letter and the suicide note

When Astra accidentally calls the wrong number when she tries to call her uncle, what she expected to only be a one night phone call, ends up being nightly phone calls with the broken boy on the other side of the line.

After finding out his plan to end it all, she does everything in her power to keep him there and talk him out of it. She can't let someone else take their life, especially when it isn't too late to be saved.

She could save him like she couldn't save her sister.