No phone call

I was woken up by the phome ringing at 7:30 this morning, It was my daughter calling from the garage!! Our home's garage. She had forgotten her keys and had let herself into the garage but we had locked the door to the house too. Am I a bad mother as I did not even realise that she had not come home until I got the call??
She had gone out to a Christmas tree party and then gone back to a girlfriends house for supper and a movie and the friend who was going to drive her home decided it was too late to drive and they all stayed at Katie's. No phone call or excuses!!