Weirdest photoshoot ever

I just had the most surreal morning.  I was booked to take pictures for a mom that's turning 30 and her 8 year old daughter.  They couldn't make it to our location, so I picked them up, drove them to get balloons (she wanted her birth year) and drove them to the park.  We got out of the car, got everything situated and either her or the grandma (who had come along for the ride) accidentally let one of the balloons go.  Luckily it was a 9.... and she wanted the year 1989.  Instead of just using the 89, or doing other pictures and picking up a 9 on our way to the last location she yelled at her mom that it was all her fault, that she didn't want to do this anymore, stomped off to my car, bent her sunglasses in half and threw them in the gutter.  She wouldn't talk about options, and as soon as I got her little girl calmed down (she was having a breakdown that her mom was upset) she started yelling at her daughter that she needs to be more careful, etc.... (the daughter didn't even touch the balloons).  I have never seen an adult treat both their mom and their daughter with that much contempt.  She had no coping skills to deal with the change in plan, blamed everyone around her for the problems and instead of deciding to have a fun photoshoot, she paid me $20 for having spent an hour of my morning driving them around.  I had a million ideas on what to do besides the balloons... the balloons for me were an after thought.  For her that became the unfixable and sat like a toddler throwing a tantrum instead of moving on.  I feel bad for all of them, especially her 8 year old.  What 8 year old is supposed to feel that they are responsible for the happiness and wellbeing of their mom?  My almost 8 year old can't deal with her own feelings yet let alone mine.    I told the daughter that it was not her fault and that it wasn't something that was important, it was only a balloon.  I got the grandma to talk to her like that instead of blaming her too... (I can see it's hereditary.  The grandma was really good at deflecting. "It's not my fault, you were supposed to grab it." and "Don't cry like a baby, you'll look ugly in the pictures.")  Then I offered them a ride home.  That was the most awkward 15 min drive ever.  I even sped through a couple of yellow lights to get them there faster. She apologized as she got out of the car and said that she'd call to reschedule.... hmmmmm, I'm not sure I want her to.  I do want to check in with her daughter though.  Maybe I'll reschedule just to make sure the daughter is okay.