What if Snowfall Frost never understood the meaning of Hearth's Warming and was destined to repeat her past mistakes as they were in a totally different timeline? We know that in the show, Snowfall Frost was contacted by the Spirit of Hearth's Warming Presents, the Spirit of Hearth's Warming Future, and the Spirit of Hearth's Warming Past, and it made her see just how wonderful the holidays are.
In an alternate world, Snowfall Frost returns and still doesn't understand the meaning of Hearth's Warming. Even if each of the spirits contacted her once, there was no way she would listen to them now. She's ready to say goodbye to another holiday.