Interesting! You see, even when I had the option to try and move Whitney in after a few times of playing the card game, she said something along the lines of still living on her previous island despite its flaws and refuse to take my offer. Maybe it's just me after all. I did keep spamming through the dialogue so I might have missed something. I'm still bummed out that I wasn't able to get her, but we can't get everything that we want.
On the topic of this thread, the sound design is really great! When it rains, you can hear the raindrops pitter patter on the roofs. When inside your house and play the radio, it seems to muffle out ever so slightly depending on where the camera is or where the radio is facing.