Perhaps the teen has some sort of developmental delay that was not properly addressed before and the mom is now trying to take matters into her own hands in a rather extreme way. Another possibility is that there is misinformation on the mom's part, and she wrongly believes that putting the teen in diapers is a solution to some behavioural or physical problem she perceives.
It might be due to a psychological situation where the mom thinks this will help the teen feel more secure, although this is a very strange approach. Maybe the teen has some regression issues due to stress or trauma.
One reason could be a medical issue like the teen has a bladder or bowel disorder.
One possible reason could be a medical issue. Maybe the teen has some sort of incontinence problem that has recently developed, such as a bladder or nerve disorder. Another reason might be for psychological comfort. If the teen is going through a really tough time, like severe stress or anxiety, the mom might think that going back to the familiarity of diapers could provide some sort of security.
It could be related to a developmental delay. If the teen has certain cognitive or physical disabilities that affect their ability to control their bowel movements, diapers might be necessary. Sometimes, it might also be a misunderstanding or miscommunication. Maybe the mom overreacted to a few accidents and thought putting the teen back in diapers was the solution.
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.
One reason could be that the girl has some medical issues like incontinence. For example, if she has a urinary tract infection or a problem with her bladder control muscles, her mom might put her back in diapers for a while to manage the situation. Another reason could be during a long journey where access to toilets is difficult and diapers can be a practical solution.
She might feel embarrassed. After all, being a teen, she is at an age where self - consciousness is high, and wearing diapers is something associated with infancy.
One reason could be that you had some sort of physical problem. Maybe you had a minor injury that made it difficult to get to the toilet in time.
It might be due to a medical condition. For example, if the girl had a urinary tract infection that made it difficult for her to control her bladder, the mom would put her in diapers to manage the situation until she got better.
One reason could be regression. For instance, if the child faced a big change like starting daycare or a new sibling arriving. This stress could make them forget their potty - training skills.
Illness could be a reason. If a girl has a serious illness like a urinary tract infection or a condition that affects the nervous system controlling bladder function, she might be put back in diapers. For example, if she has diabetes and it affects her nerve endings related to bladder control.
One reason could be a medical condition. For example, if a 16 - year - old has certain bladder or bowel control issues due to a nerve disorder or an injury. Another reason might be psychological stress that leads to incontinence. It could also be due to a developmental disorder that affects normal toileting skills.