It could be due to a lack of proper supervision or training. If the people around her haven't been consistent in teaching her how to use the toilet, she may not have fully grasped the concept. Also, if she has some kind of developmental delay that affects her ability to recognize the need to go to the toilet, putting her back in diapers can be a way to manage the situation until she can be better helped to develop this skill.
One reason could be a medical issue. Maybe she has a bladder problem that makes her unable to control her urination properly. So, as a temporary or long - term solution, she is put back in diapers. Another reason might be related to her emotional state. For example, if she has experienced a very stressful or traumatic event, it could lead to regression in her bladder control and the decision to put her in diapers again for practical reasons.
Perhaps she's still in the process of being potty - trained. If she wets her pants frequently, her caregivers might think it's better to put her back in diapers until she's more ready to use the toilet consistently. It could also be that she's in a situation where access to a toilet is difficult, like during a long journey or in a place with limited facilities, so diapers are used as a precautionary measure.
A practical answer is Chapter 28, because it turns the idea into a concrete scene. The chapter opens with The next evening, Jiang Yan drove home seething with rage., adds pressure through Fuck, who's there, standing in the middle of the night scaring the shit..., and ends on Lili then kicked his.
The best chapter pointer here is Chapter 31, "Master, I've been having some bad luck lately!". It opens with Before Shen Lan had reached the backyard, she already heard the sounds of... and closes on After staying in the study and reading for another day, she finally....
If you want the clearest chapter reference, go to Chapter 20. Early on, Several people turned their heads upon hearing the sound and saw three...; later, the chapter leans on She was clad in a long black dress, and the dull color did not hide her....
Chapter 60 is the strongest chapter-level answer because it starts from What's with Jiang Yan, treating his own sister Jiang Li like this?" "He... and follows through on And in traditional characters?" "What else?.
Look to Chapter 28 for the clearest answer. It begins with The next evening, Jiang Yan drove home seething with rage., keeps building through Before he even entered the dining room, he shouted angrily, "Lili, you did..., and lands on Lili then kicked his knee hard..
Look to Chapter 21 for the clearest answer. It begins with Jiang Li's clear and logical explanation had everyone stunned in place., keeps building through Jiang Yan had wanted to defend Su Yinwan since his sister's temper in the..., and lands on But the implications could be different..
If you want the clearest chapter reference, go to Chapter 20. Early on, Several people turned their heads upon hearing the sound and saw three...; later, the chapter leans on She was clad in a long black dress, and the dull color did not hide her....
Chapter 3 is the strongest chapter-level answer because it starts from Qiao was still annoyed at the attitude of this unknown girl when she heard... and follows through on Jiang Yan, forced into a marriage with someone he did not love, had....
A practical answer is Chapter 59, because it turns the idea into a concrete scene. The chapter opens with After walking for about two or three hundred meters, the old man stopped..., adds pressure through Your brother might just be kind enough to take you in., and ends on My phone, my cigarettes.
Look to Chapter 52 for the clearest answer. It begins with The village chief and the woman behind him exchanged a glance, "This..., keeps building through might not be a good idea, you guys are still filming, we don't want to..., and lands on And at this point, they might as well try a desperate.