If it's a single i think Caroline will survive very probably!
The worst thing about the whole affair is the fact that Becky's dodged a massive bullet with her name on it and will also now think that everyone in the house loves her and thinks she's untouchable (Dumb Becky 'logic'!).
It would be nice to see Ash lose her 'under the radar' free trip to the final though, which is a very likely outcome!!!