Thank you for posting in our online forums. So on your wife's PC there is not an icon for the remote? Was the remote icon there in the past? Have you tried a different browser? Some customers are having an issue with the on line remote after the new update, however this is an easy fix. Please see the troubleshooting within the link below and it that does not resolve your issue, please feel free to respond back.
I hope this helps.
Sling Media Moderation Team