Serratos will recur in Season 4 as the tough and beautiful Rosita Espinosa, who debuted in the comics in Issue 53. Rosita survived the mysterious undead apocalypse that has taken over the planet. In the comics, Rosita is a love interest for Abraham — a character that has yet to be introduced on the show.
Source: TV Guide
The actress is best known for her role as BFF "Angela", to Bella (Kristen Stewart) on the hit vampire movie.