Scriptwriting--Character Transition

Working on this script furiously, and had a breakthrough in creating action that was truly character motivated. I have a character that is slowly becoming humanized, so the progression of that humanization has to be displayed slowly throughout the script (first resistance, then begruding listening, etc.) and I needed an action toward the end that would put her "over the edge" so to speak with her commitment to be humanized. I wrangled for weeks over it until I stumbled upon an action that held true to her 1) occupation; 2) personality; and 3) flowering humanism. I think the process of showing a character transition from one perspective to another is an extremely tricky process. You have to spread the change out through the script, perhaps only at the end increasing the rate of change (as action intensified).