Same Win11 laptop but no audio on one userid

Im running Zoom on a Lenovo laptop with multiple Windows userIDs and the same Zoom ID.  We login using my Zoom ID from both Windows UserIDs. Until recently, my wife and I are both able to use Zoom under our respective Windows UserIDs. Now when she joins Zoom, there's no sound. Zoom audio test plays sound when Zoom is running from my Windows ID but no sound from her Windows UserID. The laptop speaker is fine. It plays sound for me but not for her. I've uninstalled and reinsalled Zoom under her UserID. I've cleared Zoom cache. Pls help. Thanks.