Phil McGraw is a phony. His 'Doctor' days ended when he failed the California Medical Exam - twice. 2002, that was his first season. Your story isn't unique. I have a friend who was a contract editor for the show who told me stories about how badly he treated his staff, including him. He is William Shatner 2.0. A gasbag of the highest order. He is a creation of Oprah and even more rude than her. Celebrities in that orbit are about as out-of-touch as your average politician. I know of no-one who watches him, anymore.
I am glad you and your sister made up. As the old saying goes, 'money changes everything,' even a little money. That should be the lesson.