In the given sentence, "she suddenly slammed her star-shaped," the figurative language being used is alliteration. Alliteration is a literary device where the first letter or sound of multiple words in a sentence or phrase are repeated.
In this case, the words "she," "suddenly," "slammed," and "star-shaped" all start with the same sound, the /s/ sound. This repetition of the /s/ sound creates a musical and rhythmic effect in the sentence. It also helps to emphasize the action of slamming and the description of the star-shaped object.
Alliteration is often used in poetry, advertising slogans, and memorable phrases because it adds a sense of musicality and impact to the language. It can make the sentence more memorable and pleasing to the ear.