One possible cause could be financial gain. Maybe someone outside the family thought they could get a ransom from the family by kidnapping a member. Another reason could be revenge against the family for something they did or were perceived to have done.
In some cases, it might be related to family disputes. For example, if there is a custody battle over a child and one side feels desperate, they could resort to kidnapping. Also, mental illness of an individual who has a connection to the family can play a role. A person with a disordered mind might kidnap a family member without fully understanding the consequences.
One possible cause could be financial issues. Maybe there's not enough money to go around, and family members fight over who gets what.
Mental illness could be a cause. If a family member had a severe psychological disorder like schizophrenia, it might lead to such abnormal behavior.
In some cases, it could be due to immigration issues. For instance, if a person's visa has expired or there are doubts about their immigration status, they may be detained. Also, in a conflict situation, civilians might be detained by the military if they are suspected of being associated with the enemy. This can happen during a war or in a region with ongoing insurgency.
It could be a case of a family member being abducted by outsiders for ransom or some other motive. The details would vary depending on the specific circumstances.
Mental illness of a family member is also a likely cause. If someone was not in a stable mental state, they might have committed such a heinous act. Also, drug or alcohol abuse within the family could have contributed to a loss of control and led to the massacre.
One cause could be gender stereotypes. In some families, it's wrongly assumed that girls should be the ones doing all the domestic work. So the sister is pushed into this role of family slave.
Equipment failure is another common cause. In a mining accident based on a true story, for instance, faulty mining equipment such as drills or lifts that break down suddenly can put the miners in danger and result in an accident.
One possible cause could be parental or guardian abuse. Some parents might have mental or emotional problems that lead them to lock a girl in a closet as a way to deal with their own issues. Another cause could be a situation of family poverty and overcrowding, where a closet is seen as a 'solution' to keep a girl out of the way. But these are all unacceptable reasons.
There are several potential causes. Murder is unfortunately a cause in some true stories. Also, self - harm or suicide could be the reason in certain cases. In addition, environmental factors like exposure to toxins or extreme weather conditions in some situations might lead to the death of the girl.
One possible cause is the therapist's lack of training. If they haven't been properly educated in different therapeutic techniques and how to handle various mental health issues, it can lead to bad therapy.