From everything I have read, they met at summer league, or at least, did not have a relationship before then. DeMarcus, right or wrong, appears to have an inherent bullpoopoo meter tuned to the highest frequencies. If you are two-faced, you are not to be trusted, nor respected. Somehow, this has morphed into a 'hard to coach, doesn't like 'authority' rep', when it is probably far more accurate to say he doesn't like duplicity. Malone got in his grill, a lot, yet the two had a solid relationship, in part because Malone was a straight shooter. Leiberman seems to have the same qualities. Boogie doesn't need to be coddled, but he does want to know you have his back, that you will go to war with him. (trying to test the waters on a trade, or even putting a hint out there that he was 'tradable' was exactly the worst thing George Karl could have done coming in)
I have really enjoyed the interviews from Nancy that I have heard and read. She is smart, shrewd, knows her stuff and also knows what it is like to have to prove everyone wrong, be an underdog and overcome odds. Her lifelong motto appears to have been "oh, I can't do that? Watch me" Perfect fit for our merry band of misfits.