This could be a story about a child who was potty - trained but then had to be put back in diapers for some reason, like an illness, and had an accident with pooping. It might be a common experience for parents dealing with setbacks in their child's potty - training journey.
First, accept the situation. It's important not to be too hard on yourself. If it's a medical issue, focus on getting better. For example, if you're recovering from an operation that affects your bladder control, follow the doctor's advice.
Accidents during travel, as in Lily's case, can be a reason. Long trips without easy access to toilets can result in 'accidents'. Also, in some cases, if there is a lack of proper supervision or reminders during the potty - training phase, a child might need to go back to diapers for a short period to re - establish good habits.
I'm not sure specifically which 'put back in diapers story' you are referring to. It could be a fictional story about someone being regressed to a state of wearing diapers again, perhaps for some sort of medical reason, like a character in a medical drama who has an illness that affects their bladder control and has to go back to using diapers. Or it could be part of a strange or unique personal experience someone is sharing in a memoir or online post.
One possible scenario is that a toddler was making good progress with potty - training but then got sick with a stomach bug. This made them incontinent again, so they had to be put back in diapers. When they finally pooped, it could have been a messy situation for the parents to clean up, but also a sign that the child's body was getting back to normal.
One possible reason could be stress. Sometimes people in the ABDL community use regression as a way to escape the daily stressors of adult life, and the mother in the story might be doing the same.
It might be used to illustrate a particular character's situation. For instance, if there is a character who is shy about wearing diapers at school because of peer pressure. The story could be about how they overcome this shyness and gain confidence.
One reason could be for medical issues. For example, a child might have a bladder control problem due to a physical condition. Another reason could be anxiety. Some kids get so nervous at school that they have trouble making it to the bathroom in time. It could also be part of a special needs situation where the child needs extra protection and assistance.
I really can't determine the main characters without more information. However, it could be a story about a patient in a hospital and the nurses or doctors involved. The patient might be put back in diapers for medical reasons, and the medical staff would play important roles in the story, either by helping the patient adjust or by being part of the situation that led to the need for diapers again.