One possible motive could be protection. The mother may want to shield her family from a painful truth.
In some cases, the mother may deceive to avoid conflict. If the truth of her secret would lead to arguments or divisions within the family, she may choose to keep it hidden. For example, if she has a different religious or political belief from the rest of the family but fears that revealing it would cause rifts, she may deceive to maintain family unity.
Motive in a true crime story can vary widely. It could be greed. For example, someone might have committed a crime to get a large inheritance or financial gain.
Jealousy could be a motive. Maybe she suspected her husband of infidelity and in a fit of rage, committed murder.
I'm not sure specifically which 'deception a mother's secret true story' you're referring to. There could be many stories with such a theme. It might be about a mother who has to deceive for some reason, perhaps to protect her family or a loved one.
Another motive could be a sense of self - preservation. Perhaps the neighbor had done something wrong in the past and deceived to cover it up. If they had, for instance, accidentally damaged the victim's property and didn't want to take responsibility, they would lie about it to avoid paying for the damages.
One possible motive is pure infatuation. The secret admirer might be attracted to the person's appearance or charm and is too shy to express it directly. For example, in a school setting, a student might admire a classmate's beauty from afar.
There could also be legal implications. If the deception involves fraud or slander based on a true story, those responsible could face lawsuits. For example, if a company lies about a true event in order to defraud investors, they can be held legally accountable. The circle of deception not only damages relationships but can also have far - reaching consequences in terms of legality and reputation.
One possible motive could be revenge. If the child had been severely mistreated by the mother, they might have lashed out in a very extreme way. Another could be mental instability, which made them unable to distinguish right from wrong.
One possible motive could be money. Maybe she was after an inheritance and decided to eliminate those who stood in her way.
One possible motive could be obsession. The stalker might have developed an unhealthy fixation on Laura for some reason, perhaps her appearance or a perceived connection.
Jealousy could be a motive. An unlikely murderer might see someone else having what they want, like a relationship or a job opportunity, and out of envy, commit murder.