Hey redmen,
I understand from an initial and surface perspective that Lyriel may come across, as several people have put it, "bitchy", which is completely fair, but take into consideration the situation she was in before being brought to the house and from her perspective: She's awoken to a very strange place with people she's never met before.
While each gal has handled the initial arrival differently, Lyriel being on guard and defensive is totally reasonable in such a situation. Give her time, I'm sure Lyriel will grow on you. If not, that's completely fair too. Each to their own and all that.
As for any "animal eared" characters, there isn't for the main story, but as I mentioned in a previous comment, there is a lost and found event that recently dropped that might be of interest to you, but these are side events. There's also the Halloween dream you might want to consider too.
Thanks for taking the time to dive into AHITR and give your thoughts/opinions though, its appreciated!