This is based on opinion. Please don't list it on a work's trope example list.
Nightmare Fuel / The Lovely Bones
As a general rule of thumb the movie is considered Lighter and Softer in some respects than the book. So more Nightmarefuel Examples
There's the prominent real life worry that if your child doesn't come home, she may have been murdered.
Susie's rape is described in person with detail. It is not that long but is plenty to get creeped out about.
Susie is raped then cut into little pieces. The only things they ever find of her are her hat, a charm off her bracelet, and her elbow, found by the neighbor's pet dog.
It is also worth noting Susie mentions it takes her a little time before we can look down on Earth which she describes as having to "fit her limbs together", which may be literal for someone who was cut into pieces by her killer.
When Lindsey is in Harvey's house Susie's sees echoes of his other victims in which she gives a rundown of the former victims everyone just reads very creepy
There's also the fact that the killer effectively gets away with the murder, and the murder of plenty of other girls. The best consolation is that he dies later in a way that implies Susie could have behind it.
Ruth gets the glimpse of the ghostly deceased women and animals coming out of Harvey's house and following him as he drives down the street. The women are described in bloody clothes and that when Harvey is stopped by a cop Susie describes it like a sea of body parts filling up his car.
And perhaps the least bothersome example but Sex in a creepy broken down old house, not probably as romantic to others as Lindsey and Samuel
The expression on Mr. Harvey's face, when he takes the washcloth off it, after killing Susie. You almost expect him to growl like a demon.
Stanley Tucci's whole portrayal of Harvey is scary as hell. His mannerisms and behavior toward Susie prior to killing her is bone-chilling.
In the film, the murder is never shown. However, we do get a scene of Susie watching her murderer cleaning the blood off himself in a bath. Her blood. And the sack with her body in it. We don't see any pieces. But we do see him throwing it into the safe. Not to mention how creepy the scene at the sinkhole at the end is, when you remember that the safe they're tossing in has a dismembered fourteen year old girl in it!
How about the scene where Lindsey finds the book detailing Harvey's plans to murder Susie? It may have been an Awesome Moment for Lindsey in that she got away, but she's just so close to getting caught. In fact, even when she knows he's come home, she still reads the book until she hears him run upstairs.