Since it's a fanfiction, it could be a very creative take on a character named Adrienne. The'messed her diaper' part could be a literal event or a metaphorical one. It might be that Adrienne is in a difficult or uncomfortable situation that is symbolized by this rather embarrassing event. Without reading it, it's hard to say for sure, but these are some of the possible directions the story could take.
There's not enough information given just from the title to know exactly what the fanfiction is about. It could be that the author is using this situation as a starting point for character development. Maybe Adrienne is a young character, and this event is used to show her growth or her relationship with other characters who help her through it. Or perhaps it's set in a world where such things are more common and has a different cultural or social context.
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Chapter 853, "The Bracelet Worn by the Empress?!", is the clearest early answer because it turns Empress Zhaode's situation into a concrete plot event. The chapter turns that into something concrete by moving from Jiang Li carefully examined the branches and leaves for a while.
Chapter 766, "Young Master Gu, Please Come Inside!", is the clearest early answer because it turns Wen Jiaojiao's situation into a concrete plot event.
Chapter 687, "How Did She Die Again?", is the clearest early answer because it turns Shao Changqing's situation into a concrete plot event. The chapter turns that into something concrete by moving from In the process of pursuing the Protagonist Group, she gradually came... to I'm busy here;
Chapter 600, "You merchants aren't even fit to carry my shoes!", is the clearest early answer because it turns Shen Ruobing's situation into a concrete plot event.
Chapter 777, "Backstage Buffs Stacked!", is the clearest early answer because it turns Jiang Shixu's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Jiang Shixu also knew about his trending on social media.
Chapter 764, "Has Someone from the Rong Family Arrived?!", is the clearest early answer because it turns Lin Manru's situation into a concrete plot event. It opens with The banquet was nearing its end, and many guests had gradually left.
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