Alexa makes her debut in the film on the second day of the hunt, although her appearence is minor. She continues to appear throughout the hunt, although her role is not fully-displayed. However, she does witness Anna Shelby's death. When Chase Landon and Drake Matthews are cornered by the shark several days later, Alexa follows Billy Trenton as he makes the shark back down.
The following day, she follows Billy, Chase and Drake as they continue hunting. When Billy and Drake are injured and they head home, Alexa soon follows them. Afterwards, she is not seen for the rest of the film, but at the end of the film, Drake says she survived.
Jurassic Shark II
Initially, Alexa was confirmed to not be returning for the film's sequel, although this later proved to be false. After Dan Bruines returns home, Alexa is briefly seen in the cul-de-sac with the biker gang. She was not involved with the "Retribution Incident."