Reminds me of the time when DS was two, and going to a playgroup twice a week.
They had a Christmas party in playgroup hours, so I had paid for his playgroup session, but appearntly because it was a party I had to be there to look after him.
So basically I had paid that days full fee to look after my own child for three hours. In addition, they asked everybody to provide something for the party tea, and I gave a box of fancy biscuits. The idea being everybody bring one thing and then everybody shares.
The biscuits never got put on the table. I realised towards the end and had a bit of a look around and found all kinds of goodies tucked away at the back. All of them the sort of thing you could give as a gift, in fancy tins or boxes.
So I asked why they had been held back and was told that they'd had a lot of food donated and so they were saving some for the second party for the afternoon group of children.
Who were all bringing a donation of their own, so who didn't need saved food. Which I pointed out and they fobbed me off with some other excuse, and basically it ended with the staff keeping the best looking food or food that could easily be passed off as gifts for themselves.
Not only had we all paid to look after our own children, we'd also apparently done a food/gift shop for the staff, and most children had taken in presents for the staff as well.
Then they tried to sell me a calendar of photo's of my own son for £12 to raise funds.
Your friend sounds like she'd get on well working there.