I don't know if my wife is mad at me or the situation Update

Yesterday was Mother's Day and me and my wife have 3 kids. 5, 2, and 4 months. She said what she wanted for Mother's Day is a break and to go to the salon. I'm off that day. I have a 14 year old son who lives with us but was going to his Mom's for the weekend because it's Mother's Day weekend. Our baby always makes up at about 630. She woke up crying and I get up. At exactly 634 my ex Mother in law calls me and says calmly "Hey not trying to scare you. Junior is being life flighted to the hospital" I start freaking out. I have a heart condition and I passed it on to my son. I asked what was going on and my ex Mother in law said that he was really hot and not making any sense when he spoke. So they called 911. I told my wife what was going on. I had to drive 2 hours away to the hospital he was at and my ex was crying in the waiting room. It was the worst day of my life. I tried to keep my wife as updated as I could. I called into work for today and ended up staying the night at the hospital. He is gonna have to have surgery. My ex has been losing it. She already has anxiety and PTSD. She's lost almost everyone in her life besides her mom. And her mom is shit. We lost our first child we ever had together at 6 months from daycare abuse. I have barely been holding it together. Me and my wife were on the phone and I was updating her and she said "Just wanted you to know I can't get that deposit back from the salon because my cancellation was less than 48 hour notice." I said "I'm sorry babe. I'll make it up to you some how." And she said "It's whatever. I'm just cursed with the worst luck. I'm gonna go take care of kids." And hung up. I don't know if she's mad at me or the situation. She sounded really pissed off. Maybe I didn't have to go to the hospital she since my ex would already be here but I couldn't stay at home while he's in the hospital. I feel bad her whole day got ruined.

Update: His surgery went well. And he's okay.