Fen and OTA
Fen was not going to shirk the opportunity to wear a full Fillorian dress again like she did when she was part of Margo and Eliot's court, so she had gotten something made for herself. She was going to enjoy this last day in Fillory, damnit, eat all the food (none has good as Josh's, of course), and dance and be merry.
But as soon as she had walked into the party which was already in full swing, Fen couldn't do any of those, not even sit by Jaskier and listen to his singing before deciding she was going to drag him down a hallway to make out with him. All she could do was take in the setting, remembering with an expression of forlorn on her face, her Fillory. And her Castle Whitespire, which was probably more of Margo's but it was still hers too.
Maybe she was never entirely over the original Fillory to begin with. Maybe she would have found a castle like this in New Fillory and would have also stood there and stared at him, wishing so hard that she was back in her own home, back before she was supposedly overthrown and hung by angry Fillorians. They could have made things better, right?