After a comet appears over the campus where Primrose is studying, she wishes for something that most people would consider to be selfish; To be able to save the characters from their gruesome deaths in The Walking Dead. While most of her friends laugh at the notion, she doesn't change her mind on it.
What she imagined would happen, was that she would be given the chance to tweak the original games, give the characters true chances should they be saved. Maybe even work for Telltale to bring out new, better versions of the old games. But you know how the saying goes...
Be careful what you wish for.