That's a bummer to me to hear that it feels strange to interact with Tasya and now with Khyree. Glad you spoke up about that oopsylon.
I believe we can soon fade Tasya out of being active in the game. Her actions can split off from Regan's and Admiral's since she is a dedicated circus member after all and she doesn't love in any way that her mother and Mischa have put her in this position. There will be a way--assuming the party does locate Lady Oceana--to transfer the knowledge Tasya holds in her subconscious to Regan or Admiral. She would be likely to then retreat back into her circus, feeling she does not have the strength to accomplish what her mother hoped she would--as the imp implied.
That said, perhaps Admiral and Regan ultimately will offer to champion her cause for her (🤞), a cause that they are themselves are heavily intertwined in.
Now Khyree, she definitely never wanted the path her master set her on. I see her being quite content to pass her torch to Admiral. I just need her to 'deliver' something first.
And since you mention Regan's role, Regan has a backstory that is connected to the fight against slavery, Taresh, and the original ringleader of Madagast circus. So he is pretty intertwined in this story. Also, he may find out more about his pact weapon's origins as well. I feel Ma is playing Regan strategically and waiting for the right time to reveal his 'hand'. Although Ma, please pipe in and let us know how you feel about all this.