cancer center. defense attorney mark geragos says it could be a tough case to prove in court. >> what you always have to take a look at what the prosecutors will always look at in a case like this is the motive. why did somebody want to do it and why did they want to do it in this way and rule out other environmental factors. that's where the defense is always going to go. was there a motive? would somebody have done this, do they have the character to do this. >> reporter: a lawyer for gonzalez-angulo says she's "completely innocent and these allegations are totally inconsistent with her personal and professional life." neighbors around her gated home say she is a quiet woman who kept to herself. george blumenshein survived but he's suffered severe damage to his kidneys, even needing dialysis to try and repair the damage. ed lavandera, cnn, houston. back to istanbul where protesters are battling with