the only way Sienna was getting out of the car was if a police officer took her out.

Sounds like an intense moment out of a dramatic film. You did what had to be done and today it shows you made the correct decision. I'm sure Sienna better understands now that her quality of life is far superior because of that difficult choice you made that day. Surely when she is an adult, she will look back and be thankful that you saved her from many traumatic experiences that would have been far worse than that one day where you had to stand up for what you believed to be best for your girl.