You shouldn't try to fool someone with dementia.
Samantha's grandmother has dementia and her favorite video game was just remastered, but she can't afford to purchase it.
Samantha wants to obtain a copy of the new game.
Samantha tells her grandmother she really wants to buy a new game but is broke.
Samantha approached her grandmother, tells her that it's her birthday and asks for birthday money.
Samantha's grandmother offers to buy the game for her as a gift.
Her grandmother having a better day, checks the calendar, realizes she is lying, and kicks her out of the house.