Another possible motive could be revenge. If the man had previously damaged something of hers, either physically or emotionally, she might have seen setting his car on fire as a way to get even. It could also be that she was trying to send a strong message to him, perhaps that she was not going to tolerate his behavior any longer.
There could be various reasons for such a situation. Maybe she was extremely angry with the man, perhaps due to a relationship gone sour like a break - up or a big argument over something important. Another possibility is that she has some mental issues that led her to this extreme act. However, without more context, it's hard to tell the exact full story.
One possible motive could be love. Maybe she was chasing the love of her life who was running away from her. Another motive might be money. If someone owed her a large sum and was trying to escape in a car, she would chase after them.
One possible motive could be revenge. Maybe he was wronged in the past and is now taking it out on others.
Perhaps he has a mental disorder that makes him unable to control his violent urges. He might not even fully understand his own motives, just acting on some dark impulse within him. Another possibility is that he is being controlled by some external force, like in a horror story where a curse or an evil entity is making him commit the slaughters.
Well, in a dead man story, motives can vary widely. It could be self - defense. Perhaps the dead man attacked someone first and in the heat of the moment, the other person fought back and accidentally killed him. Or it could be a matter of jealousy. If the dead man had a relationship that someone else desired, jealousy could lead to his death. Also, in some cases, it could be a random act of violence by a deranged person who had no specific reason to target the dead man other than a general urge to harm.
Well, perhaps the baby mama was extremely angry with the man. Maybe he had failed to provide financial support for their child, or there could have been some sort of relationship drama like he was seeing another woman. In a fit of rage, she decided to set his car on fire as a way of getting revenge.
Well, perhaps he was influenced by others. He could have been forced or persuaded by some bad people who took advantage of his blindness. They might have promised him a share of the loot. Also, he could be suffering from some mental illness that made him act irrationally and commit robbery without fully understanding the consequences.
One possible motive could be financial gain. Older men are often more financially stable, and the girl might see an opportunity to have a more comfortable life. Another motive could be a search for father - like figures. If she lacks a proper father figure in her life, she may be attracted to the older man's maturity and stability.
One possible motive could be insanity. Maybe he just has a deranged mind and the act of killing gives him some sort of twisted pleasure. The muffins could be a part of his delusion, like he believes his victims are ingredients for some special muffin in his warped mind.
One reason could be financial issues. If the man wasn't paying child support as he should, the baby mama might have snapped. Another could be jealousy if she thought he was with another woman.