I can assure you Carmela and Nidorina wouldn't be close. Their dispositions oppose each other too strongly. If they ever got into the same room, it'd probably get tense. And should they start clawing at each other, Nidorino (you know which one) wins either way. There's something about Nidorina that just makes her kind of off putting to certain females, I don't know what it is, and Carmela is pretty hard to be on friendly terms with as is. Nevertheless, they'd still be on more friendly-rivalish terms than Nidorina and Bellie.