I found a workaround that worked for me:
Either don't be good to Joy leading up to this, or try not to please her during the date. Hope it works for you too.
Thanks!
I tried a new game and the Rhea date was still repeating when waiting by the Servant's Quarters (and Fast Travel). Eventually I tried not getting any positive points on the date and that's when I got through to the next Rhea event.
The Rhea date seems to keep repeating on my end. Is this a bug or am I missing something?