Based on the title alone, one would assume director Francesco Amato’s “18 Presents,” a terminal-illness-themed melodrama about a self-destructive young woman coping with the death of her mother, would place its emphasis on the special gifts the protagonist receives each year until adulthood. Not exactly. While this Italian-language weepie blessedly sidesteps schmaltz and saccharine, it disappointingly fails to capitalize on its promised premise. Neither emotional enough to pay proper tribute to the true story it captures, nor hokey enough to qualify as “so bad, it’s good,” this is a flaccid, failed attempt at heart-tugging poignancy.