My sister's kids broke my sons bed

I'm so fucking frustrated right now. My baby shower is tomorrow, so my sister who doesn't visit often is in town to celebrate. I decided to invite her and her family over so the cousins could all play and have a good time. At some point today, one of her girls jumped on my sons bed and shattered the supports. His bed is ruined and he has to sleep with his matress on the floor. What broke was a toddler bed and while he did need an upgrade, but I wasn't quite ready to financially upgrade his bed right this second. So I had to take out a loan to buy him a new bed frame because I don't have enough money to outright buy a new bed frame and mattress. They gave me $100 so they are trying to make up for it but I'm still beyond frustrated. While I understand they are trying to make up for the mistake, $100 isn't enough. It helps and is more than I have but I'm still frustrated. I really just needed to vent.