How does viola react whenMalvolio catches up to her and wishes to return the ring to her?

In Shakespeare's "Twelfth Night," when Malvolio catches up to Viola to return the ring, she feigns confusion and insists that she never gave him a ring, expressing surprise at his claim. Viola is aware of the deception but maintains her disguise as Cesario, leading to a moment of tension and comedy. This encounter highlights her cleverness and the complexities of her situation, as she navigates her feelings for Orsino while remaining in her male disguise.