Self - interest is another motive. Like Susan Smith, who was having an affair and saw her children as an obstacle to her new relationship. She was so focused on her own desires that she committed the unthinkable act of killing her own children for her own self - serving reasons.
There's also Andrea Yates. She drowned her five children in the bathtub. She was suffering from severe postpartum depression and psychosis. Yates had a history of mental illness and her case brought to light the importance of mental health awareness and support for new mothers, as well as the potential risks when mental illness goes untreated.
Some serial killer moms may be seeking attention. They might feel neglected in their own lives and think that the only way to get noticed is through these extreme acts. For example, they might want the sympathy of others.
Since we don't have the actual story, there's no way to know who these two moms are specifically. They could be any two women who are mothers in the context of the 'raw story' that's being referred to.
Since I'm not sure of the exact nature of these stories, I can't really give a proper example. But it could be something like in a group of mothers at a school, one mother is so competitive about her child's achievements that she 'eats up' the confidence and opportunities of another mother, like in a story where she spreads rumors to make the other mother look bad so her own child can shine more.
I'm not sure specifically what 'one moms story' is without more context. It could be the story of a single mother's journey through life, perhaps her struggles in raising children, dealing with finances, or finding personal fulfillment while taking care of her family.
It's not a completely true story. Some parts might be based on real events or experiences, but a lot of it is likely dramatized and fictionalized for entertainment purposes.
In the world of Creepypasta, Nina the Killer is smitten with Jeff the Killer. Nina has a deep - seated obsession with Jeff. She's constantly thinking about him and wants to be a part of his world. Jeff, though, is not exactly the type to have a normal loving relationship. He's a killer through and through. Their 'love story' is more of Nina's one - sided pursuit of Jeff. She sees his chaos and violence as something alluring, while Jeff may just see her as another element in the dark world he inhabits. It's a very abnormal and somewhat creepy relationship that is a hallmark of the Creepypasta genre.