Parents should look at the age-appropriateness of the content. Make sure it doesn't have overly mature themes or intense emotional situations that might be confusing for kids.
One important thing is to check the language used. It should be clean and not contain any offensive words. Also, the values portrayed in the story should be positive and teach good lessons about love and relationships.
Parents need to think about the complexity of the plot. A simple and understandable storyline is better for younger kids. And they should ensure the story promotes healthy and respectful forms of love.