Then slowly stimulate her cooking desire, let her taste the sweetness, and then slowly teach her some foods that are relatively simple to cook. Tell her that the reason for not eating takeout is not that she is afraid of spending money, but that she is afraid of being bad for her health. Many people use gutter oil, because the ingredients, oil and salt used for cooking will be less, the taste will not be so heavy, and the oil is also guaranteed.
You can ask her to do it when cooking at ordinary times. Then take this opportunity to teach her and encourage her to cook at ordinary times. The first time you can teach him by hand, and the second time you can let her do it by herself. Even if the food she cooks is not delicious, you should eat it all. Give her affirmation, too Tell her to take her time and not to worry. It's good enough to do this for the first time. Praise her more and give her confidence. We will continue to do it next time.
It can be arranged during the day, for example, she cooks breakfast, and you cook Chinese food and lunch, which usually take turns. After she learns simple dishes, you can teach her to cook big dishes several times, which will also avoid her chance to eat takeout. I believe her cooking will get better and better. When she realizes the fun of cooking, she will often do it herself. Maybe her cooking will surpass yours.