You asked Beth to be here around 7:00, didn't you?
Yes, what time is it now?
It's almost 8.I wonder what happened?
Um, she might have forgotten the time. Why don't I call and see if she's on her way. 'A few minutes later.', I got her voicemail so she must not have turned on her cellphone.
I hope she didn't have a problem on the road. Her car could have broken down or something.
Of course she may have simply forgotten and done something else today.