Friends son and my daughter have an after school session with one of the teachers for an hour a week. I like to collect my daughter so I can find out what she's been doing and so on. I am happy to drop my friend's son home too. Tonight I went to school to collect my dd and when friend didn't turn up I paid for both kids and left with both assuming friend was held up or similar knowing I wouldn't leave her child at school. On the way out of the school I noticed I had a text message on my phone which said "I'll pick XX up". Just about to leave the car park and my friend pulls up in her car and drops the window so I did too and said "I've just received your message" to which "F*ck off, you never let me pick your daughter up, ever..." was the response with a sneer (not a smile). I was absolutely gobsmacked and her son climbed out of my car. she moved further into the car park as a car was trying to leave and so I drove off. Not sure how to play it now then as she was completely furious with me for picking my daughter up. Advice please...