I am so proud of my dog the hard headed thing she is

I have not been able to teach her to sit for Jack. this afternoon as I was walking her, just starting out, her leash came off. I don't know what happened but I am sure this is my fault. This is a dog who wants to run and I said Franny no, come back here loudly. She came to me immediately and SAT at my feet. I was proud and so happy as it could have been such a different outcome. I excuse her from sitting lessons. although I will still try.