I agree! I think girls specifically are getting better about sharing their locations or at least telling someone where they are going to be. There have been many girls go missing on runs and even when it feels safe, it just is a risk a female takes when running alone (I am not saying it's wrong to do so, I almost always run alone myself). I do think someone knowing your plan and routine is important and it's a good thing this roommate was immediately alarmed. There could have been a lunch plan or even walking to class together or something like that and when she didn't return, it was not only she didn't return, but not she is missing a preplanned meeting with that person.