She began her career as a body double for Anya Taylor-Joy in M. Night Shyamalan's psychological thriller Split (2016) before her role as Sienna in Damien Leone's horror film Terrifier 2 (2022).

She initially sought to pursue a Juris Doctor degree but switched to a major in English and a minor in Italian before dropping out to work as an optician.

[3][2] One of LaVera's first experiences on a film set was working as a body double for Anya Taylor-Joy, Haley Lu Richardson, and Jessica Sula in M. Night Shyamalan's superhero thriller Split (2016).

[6] LaVera got cast as Sienna which would become her breakthrough role, becoming a co-lead of the Terrifier film franchise opposite David Howard Thornton as Art the Clown and Samantha Scaffidi as Victoria Heyes.

[4] IGN's review said that LaVera "rules as Sienna in her angel-winged fantasy armor as a final girl fighting for family, facing her demons, and screaming bloody war cries in Art's mocking face,"[7] while Matthew Jackson of Paste wrote that "LaVera, tasked with injecting humanity into the sequel, lives up to this task with pure star power.

[9] In December 2022, LaVera was cast as Alessa, a pregnant woman whose antagonizing father disapproves of her relationship with her husband, in Joe Lam's 2023 horror film The Fetus, opposite Julian Curtis and Bill Moseley.

[10][11] In February 2023, Bloody Disgusting reported that LaVera would star as Lisa Gray in the supernatural thriller film The Well, directed by Federico Zampaglione.