It might be related to her age as well. If she was very young or very old, her bladder control might not be as good. Young children are still learning to control their bladders, and the elderly may have weakened muscles or medical conditions that affect bladder control. Also, in some fictional stories, there could be a curse or magic involved that causes this to happen.
In some stories, it could be due to extreme fear or shock. For example, if she suddenly faced a very scary creature or a life - threatening situation. Her body's natural response to such intense emotions might cause her to lose control of her bladder. Another possibility is that she was under a lot of stress, which can also affect the bladder's normal function.
Maybe she had a medical issue like a bladder problem. It could also be that she was in a situation where she couldn't get to a toilet in time, perhaps she was in a very long line or lost in an unfamiliar place.
Maybe she drank too much water or other beverages before the prom and couldn't hold it any longer. Or she might have been really nervous which affected her bladder control.
She could try to clean herself up as best as she can. Maybe find some spare clothes if possible.
One reason could be that she was too excited during a family event and simply forgot to go to the bathroom. Another might be that she was too shy or embarrassed to ask to use the toilet. Maybe she was ill and had a weakened bladder control.
One reason could be that she was too far from a bathroom and couldn't hold it any longer. Maybe she was in a long line for the restroom or in a place where there were no accessible facilities.
One reason could be a medical issue like a urinary tract infection which might cause sudden and involuntary urination. Another possibility is if she was in a situation where she couldn't reach a bathroom in time, for example, being stuck in traffic for a very long time. Also, if she was extremely scared or excited suddenly, it could lead to such an incident.
One reason could be a weak bladder sphincter. If it's not strong enough, the pressure from laughing during tickling might cause involuntary urination. Another possibility is that she has a very sensitive nervous system, and the tickling stimulates the nerves in a way that disrupts the normal control of the bladder.
One possible reason could be stress. In fanfic scenarios, she might be under a lot of pressure from her scientific research or protecting the Earth. The stress could build up to a point where she starts to harm herself as an outlet.
Well, there are several reasons. Firstly, if she is in a situation where she has been holding it for a very long time, perhaps due to a long event or journey without a break. Secondly, fear or anxiety can sometimes play a role. For instance, if she is in a new and unfamiliar environment and is too shy or afraid to ask for the location of a toilet. Also, unexpected delays like a long queue at a concert or a festival can lead to such desperate situations.
One reason could be that she had a sudden and severe stomach illness. Maybe she ate something bad before getting in the car and couldn't hold it any longer. Another possibility is that she was too young to control her bowel movements properly and there was no toilet available in time while in the car.
Often, in such stories, the woman might have underlying mental health issues that are exacerbated by the pregnancy. Or, she could be dealing with a traumatic event related to the pregnancy itself, like a health complication for her or the baby.