They could seek revenge. Driven by anger and grief, they start to hunt down the person who killed their mama. This could involve a long and dangerous journey, where they have to face many obstacles and even put their own life at risk. They might also become withdrawn and depressed. Losing their mama in such a brutal way could make them lose interest in life, and they may isolate themselves from friends and family, slowly sinking into a deep state of melancholy.
It could be related to a dark secret. Maybe the mama knew something about the killer that the killer didn't want anyone to find out. So, in order to keep that secret buried, the killer took the extreme step of killing her.
Another factor is the backstory. If there are rumors or a known history about the mama that involves dark magic, death, or some kind of curse, it adds to her scariness. Maybe she was once a kind mother but then something tragic happened that changed her into a malevolent being. This transformation and the mystery behind it can send shivers down the reader's spine. For example, if she was cursed by an evil witch because she didn't pay a debt, and now she's out for revenge on the world around her.
One mama scary story is about a mother who lived in an old, creaky house. Every night, her child would hear strange noises coming from the attic. One night, the mother went up to the attic to investigate. When she opened the door, a cold wind blew out, and she saw a pair of glowing eyes in the darkness. She quickly shut the door and ran back downstairs, but the noises continued throughout the night.
Well, my friend was camping near a river. He decided to go for a swim. Unbeknownst to him, there was a strong undercurrent. As he swam further out, he got caught in it. He struggled hard to swim back but was being pulled downstream. Just when he thought he was going to drown, he managed to grab onto a fallen branch that was sticking out from the riverbank. With all his might, he pulled himself to safety. It was really a close call.
Natural disasters like floods or earthquakes could be reasons. For example, if there was an earthquake and a building started to collapse while your friend was inside. Another reason could be animal attacks. Say a wild bear suddenly charged at your friend in the woods.
It's hard to say for sure. 'Mama' could be inspired by real-life incidents but have a lot of fictional elements added for entertainment value. Or it could be completely made up from the imagination of the creators.
I'm not sure. It's possible that 'Mama' has elements of truth or it could be a complete work of imagination. Without more context, it's difficult to tell.