Do we still not know why Amanza doesn't talk to Chrishell?
I thought it was because Amanza had been investigated for drug taking as part of her custody battle and she felt that Chrishell accusing Nicole of being on drugs was taking it too far and had potential implications for Amanza ie a risk however remote of that triggering a re-investigation and losing her kids.
In terms of loyalty, Amanza feels forever in debt to Brett & Jason because they gave/loaned her money when she was financially
ducked and brought her profile raising opportunities with the tv show etc. So Amanza is always going to side them. Overall I think the feeling with Amanza and Mary is that Chrishell is making unnecessary trouble for the smooth running of the O Group (as opposed to Chrishell feeling she is standing up to bullying and refusing to eat
tit for the sake of group harmony / making Mary’s life easy).
I also get the impression they don’t quite get why Chrishell’s deal breaker with Jason was he didn’t want to have a child, to then end up in a queer relationship. It’s irrelevant and also none of their beeswax but maybe there’s more to it than we’ve been shown, also think Jason still likes Chrishell so given their ride-or-die loyalties, Mary & Amanza‘s sympathies will lie with him.
Also as the shows central character maybe they think Chrishell is getting too big for her boots? In Amanza’s heartfelt chat with Mary she seemed to be implying any troubles Chrishell had in her life were molehills being made into mountains.
tldr; I think it’s a few things bubbling up as opposed to any incident