undertale:AUTOPHOBIA - An AU in which all monsters are more melancholic versions of their former selves, having lost all the colors in life due to the oppressive and dull atmosphere of the underground
And only Frisk can “revive” everyone again, turning them into their more canonical versions through care, communication and support
Toriel is an alcoholic who drinks away all her regrets about past mistakes. By drinking herself into unconsciousness, she poses a certain danger to others, and therefore the inhabitants of the ruins have to avoid her.
At her core, Toriel is still a caring mother who wants the best for her child, but her mind is clouded by alcohol and self-hatred.
But perhaps a small sign of love can make a difference?