Is there even an anti Nami thing from Bella at all? The first day prank seemed entirely random, Nami was just the unlucky person who ended up as the butt of the joke or maybe the only one falling for it lolI agree with you about that, but it'd be really hard for Bella to keep up the act if she saw Kate inteacting with Ayua every other day. The way Kate tries to remind Bella suggests they don't cross paths often, which they would if Ayua and Kate were chummy. As far as Bella and Nami, three days in Bella compliments Nami's tits as cute. So Bella's anti Nami thing isn't really on the same level as her anti Kate thing.
I also wrote some more stuff about Dwight for you in that post, nearly forgot to mention it.
Otherwise - and that could of course be because of Nika - shes very very tame towards Nami considering how antagonistic Nami (rightfully) is towards her. Shes not making digs at her like she does with Mila and Vic and never mentioned ayua hanging out with nami or anything like that. Imo she kinda likes Nami since - ironically - Nami tried to punch her in the face.
She adores this kind of unconditional loyality and support and envys it (thats probably a main point why bella values ayua this highly too).
No matter how much Nami antagonizes her, she stopped fighting back (at least in a serious way), any other girl talking like that to bella or trying to punch bella would be harrassed by bella nonstop lol
Shes just a asshat and unable to apoligize, so shes just waiting till nami calms down