One possible theme could be love and protection. The act of cradling and lifting someone up can symbolize a strong emotional bond and the desire to keep the other person safe.
I'm not sure specifically which 'cradle his hands and lift her up' fanfics are out there. You could try searching on popular fanfic websites like Archive of Our Own or Fanfiction.net. Just type in relevant keywords from the phrase and see what comes up.
No, 'Blood on Her Hands' is usually a work of fiction. Writers often come up with such captivating but made-up tales to engage and thrill the audience.
The movie 'Up in the Air' is not based on a true story. It was written and directed to present a fictional narrative with themes and characters crafted by the creative team.
I'm not sure specifically which 'hands up boy story' you're referring to. It could be a personal anecdote about a boy who put his hands up, perhaps in a classroom to answer a question, or in a situation of surrender or excitement.