Would I be wrong if I took the van & not came back home in the AM when I drop my oldest at the bus…

Would I be wrong if I took the van & not came back home in the AM when I drop my oldest at the bus stop? Now I told my bf I needed to fax some papers to the dr office he said he was getting off at 2 so I said I'd wait til he got off so I didnt have to bring our 6mth old out in the cold I fell asleep with our son before 2 & woke up it was 330 I call him to see where he was at he the damn car shop trying to see whats wrong with van. He like he 4got I needed to go so I get my son dressed to go to the library in the cold to find out that it was closed Im so fucking pissed right now becuz the papers was suppose to been in yesterday but they switch to a new office tuesday/wednesday so I couldnt drop them off when I was by the hospital tuesday & they fax was down yesterday so they told me to fax it today.