Factions and sub-groups are part of the BB dynamic. It works in any enclosed environment - an old people's home, a hospital weard with long-stay patients, and to a leeser degree, and office or workplace.
Shilpa and Jade are from such different and diverse cultures that there is simply no common ground. Shilpa is intelligent and perceptive enough to understand this, and work around it - Jade is not, and reacts by absenting herself from Shilpa's orbit.
Danielle likewise has neither the intelligence of life experience to apprciate that other people live very very different lives than her, and I think a degree of racism may be inherent in her background, such is her unconcious mockery of Shilpa's speech patterns and accent.
If I was in the house, I would incline towards Shilpa's group, but I would try to blur the lines between the groups if possible, they are unhealthy, and lead to rows and whispering campaigns.
I have to say I would also veer towards Shilpa's group because I could simply stare at her all day and be really happy - she is exquisite!