During the battle, there was explicit mention of how much self-control and discipline Egwene had gained - her anger was focused, cold and directed.

Egwene may be angry, but what she seems to have learned from her first attendance upon Elaida and the entirely different way she behaved in the second, is how to control her emotions, so they don't interfere with her decision making.

If Rand "knows" her anger, it won't be a tirade and I doubt it will be a tool that can be used to control her. I think it will be more akin to a meeting between equals.