She is gorgeous. My first child is quite spirited as well. When she was young, I bought a book on raising "a spirited child". It was well thumbed. In the end, it was exactly what you are doing; non reactive parenting coupled with my spouse jumping in when I was at my wit's end. As a teenager, this persistence to do things is now paying off so I am sure it will pay off for you too!
Thank you very much @johannegauthier. I'm glad to hear that it worked for you too. I'm hoping that, that will be the case too when she is older.