I'm going to call the police for a friend
Why, what's happened?
I think my friend has gone missing.
Are you certain your friend is missing? Have they done something out of the ordinary, like not answer calls or texts?
I don't think she's missing, I'm sure of it. She went to a mountain and she might be hiking or something.
Just to be safe, I think you should call the police. It's better to be safe than sorry.