Dude if it ever happens again, you should definitely get your but over to her house. (assuming you can drive or it's within a close distance).  I was texting a girl who sounded like she was super depressed and I knew she had a history of hurting herself, so I drove over to her place and walked in.  I was right, she had taken every pill she could find in her bathroom.  I was super worried that I would walk in, everything would be fine, and I would look like an idiot.  But, trust me, people like to know that other people care that much about them.  So, don't be afraid to show up at her house.