"Obey the rules or I'll tear you apart and eat your insides while you're still alive." *In the beginning of Chapter 2, Mommy Long Legs presents herself with a warm and welcoming front to lure The Player into participating her games. This facade, however, diminishes very quickly as she threatens The Player with death and the possibility of having their innards consumed by her, should they refuse to abide by her commands. Throughout the variety of games The Player has to play to win and survive, Mommy Long Legs displays a sinister mix of childlike friendliness and unhinged sadism, making her movements unpredictable. She tends to mask her frustrations with a friendly childlike facade to hide her growing anger, such as when The Player wins yet another game of hers, or when they escape from the Statues game area, causing Mommy to desperately try luring them back into the game area with the false promise of giving them the Train Code, while increasingly getting furious and violent.

Throughout the events of Chapter 2, Mommy Long Legs ropes The Player into participating multiple games, in which she claimed that she will hand pieces of the train code if they win the games. Mommy Long Legs however does everything in her power to rig the games against The Player in ways that could result in their death. For example, removing the strings holding back the Mini Huggies in the Wack-a-Wuggy game. It seems that despite her abilities and strength, she prefers to not take action herself, instead hoping that guiding The Player into her rigged games will result in their death without her having to do anything.

In the Transfer Request Document, Mommy is revealed to have been hostile towards the scientists and personnel of Playtime Co. Her hostility to the scientists also extends to any workers that are affiliated with Playtime Co. regardless of work position. In contrast to her behavior. Mommy Long Legs seems to have an extreme ego and attachment issues. She boasts about being the closest thing the children at the game station.*