How does Desdemona try to help Cassio regain Otello’s favor?

In Giuseppe Verdi’s opera Otello, Desdemona attempts to help Cassio regain her husband's favor by actively interceding on his behalf.1

Following Iago’s suggestion that Cassio seek her assistance, Desdemona repeatedly pleads for Cassio’s reinstatement. She openly acknowledges to Otello that she has spoken with Cassio and expresses her desire for him to return to Otello’s good graces. Despite Otello’s growing agitation and his refusal to forgive his former lieutenant, Desdemona persists in her efforts, viewing her advocacy as a kind and necessary act to resolve the misunderstanding between the two men.12

Tragically, her innocent persistence is manipulated by Iago, who uses her intercession as a tool to fuel Otello’s unfounded jealousy and suspicion of infidelity.12