It's totally possible to learn to cook without ever ruining a meal. You start by working under supervision and doing prep tasks - a lot like the hierarchy in a professional kitchen.
It believe it also helps that we don’t have TV or any electronic devices for her to use. We dabbled in Daniel Tiger and the like, and her behavior immediately became worse, and the TV was the only way to mollify her.
I think the ruined meals were more a case of me biting off more than I could chew and attempting something beyond my skill level. I've always loved experimenting in the kitchen, but when I was starting out it didn't always go so well.
My experimenting has paid dividends though, as people are constantly impressed at everything I cook.