Objectively, I feel it does show malice since what she is saying is that her husband sexually assaulted her, if she did lie about it, than that is a malicious thing to do, to make that up about her ex husband.
it will be almost the same thing as when an ex wife or partner accuses the husband or former lover of sexually assaulting their children, see the woddy allen and mia farrow situation from Woody Allen POV, he felt Mia acted out of pure malice in making those accusation.
Not saying Woody is innocent or guilty though.