Generally 'sides' seem to have cropped up. I wouldn't say that they're real sides, in that they'll all fight one another, but I'd say more like... cliques within the bigger NeS Hero group.
Rachel was, in a way, one of my two 'avatar' characters; that is to say, the characters I focused upon the most. Rachel was my dedicated 'central character' for a lot of my earliest posts and Soriel provided backup for her. Because they were travelling together, away from the rest of the cast, they have a friendship there, albeit a strange one. In this respect, Soriel and Rachel are likely to be 'on the same wavelength' frequently and Soriel is likely to put a good word in for Rachel in her tiff with Losien. That doesn't mean he doesn't like or won't support Losien, but doubled with the fact that he's a character that values strength he's likely to be critical of her.
Likewise Maeve was saved from forgottenhood by Soriel and thus owes him. She also recognises his use and, in a way that I'd just now realised, she treats him as a kind of guard dog. To the point that it could be, in a less sinister fashion, a similar situation to "Unleashed" the movie. Essentially this has given Soriel a specific function within the group. And so Soriel, Rachel and Maeve are more likely to recognise each other's arguments over the others'.