Anning was not afraid that the Empress Dowager and Prince Kang would collude upon realizing she was intentionally stirring things up.
How should one put it? Anning's actions were entirely based on the personalities of these three individuals.
Emperor Jianwu and Prince Kang did not get along.
Emperor Jianwu was resentful that Prince Kang harbored inappropriate thoughts about the Empress Dowager, and whatever Prince Kang said, the Emperor wouldn't take it to heart, sometimes even deliberately acting against him.
Meanwhile, Prince Kang wholeheartedly wanted to cultivate Emperor Jianwu into a wise monarch. He held Emperor Jianwu to very high standards, demanding everything that a wise monarch should embody.
With such two individuals, how could they possibly sit down and talk amicably?
Then there was the Empress Dowager.
The Empress Dowager was indeed trying to charm Prince Kang, but she would never ask if Prince Kang had visited the Princess.