Cheria was one of my favourite characters next to Hubert and Pascal, actually. And Malik ended up being pretty cool after Chapter 5.
I haven't gotten toin the English version yet, but if them opening up and the VA (especially in the post-battle dialogue) gets better, that's cool. I do sorta wonder if Cheria's still rather flat during battle after that part, though.the part where Cheria bitches at Asbel or when Hubert joins the party
It feels like that
Cheria's lines open up in general and, as such, so does her performance. She acts a bit more like herself in the "What else are you hiding from us?" win quote with Pascal (since this happens before those two events you mention). I think it's just Laura Bailey reacting to tsundere lines and getting in character from that though. Still sounds bored as fuck during combat