Arena has recently completed filming an acting supporting role, as Rosalba, in the new Australian feature film "Promised" (2019), directed and co-produced by Nick Conidi. She co-stars with Paul Mercurio, Antoniette Iesue, and Daniel Berini. The film is a romantic drama, inspired by actual events, with the plot beginning in 1953, of two young Italian children who are promised in marriage by their fathers, by "combinare". Twenty-one years on – despite changing times, fading traditions and 1970s liberation – the pair are expected to marry, or face the consequences, at any cost. A trailer for the film was released in July 2019. The premiere screening of "Promised" was held at the Lavazza Italian Film Festival, on 1 October 2019.