The Minister of Revenue listened to his daughter's words and said only, "We'll see what the Prince An Residence decides. If they want to retract the betrothal, it can only be the Prince An Residence that does it. If we were to retract the betrothal, that would be defying the imperial command and disrespecting authority."
Xuanyuan Jie was the Emperor's own nephew and the Empress Dowager's own grandson. It was most appropriate for him to speak with the Empress Dowager and explain the situation to retract the marriage.
Although defying the imperial command is disrespectful, family matters can always be discussed among ourselves. Moreover, marriage is a private affair. If it's the Prince An Residence that retracts the betrothal, it can be considered a family matter.