I have a theory! Ever since the Shadow King was introduced, it felt like the MC was connected to him somehow. After the most recent chapter, I have enough evidence to make a proper theory!
SPOILERS / POSSIBLY SOME INACCURATE INFORMATION
The theory is as follows: The Shadow King had a forbidden relationship with a Seelie, conceived the MC, and we were sent away for our own good. It would explain why we couldn't remember anything when Carter found us -- I speculate that the Shadow King did something to erase our memories. Also, this a bit of a stretch, but it would also explain why the king hasn't been to the court in 50 years. Perhaps, the last trial was the Seelie's, and, at the cost of her life, he denied any involvement with her. The king seemed wistful at the end of the recent chapter, possibly regretting his actions at the last trial. Another stretch, but perhaps the Kestrel was a childhood (we aren't given his exact age but I'm assuming he's around ours) friend. This one is much less plausible since I'm going off of one line in our first encounter with him. (something about how he looks familiar???)