Jiang Li had a rough guess of Ji Shuran's next move, which calmed her down.
The worst thing was to be in a passive situation, not knowing what one would face, and hence unprepared. But once you know, even if it is a predicament, you can always find a way out following the clues; you're not completely helpless.
Jiang Li knew that the Xue Family case had put her under Princess Yongning's scrutiny. Setting aside Shen Yurong's reaction, the haughty princess was bound to look for reasons to trouble her in the near future. Before this, if Lady Ji and her daughter had behaved, Jiang Li wouldn't have had the time to waste on this matter. But since Lady Ji remained unrepentantly troublesome, Jiang Li was convinced that keeping Lady Ji at the Jiang Residence wasn't a good idea anymore.
She needed to remove these extraneous people.