I think the house think Sarah and Adjoa are up for eviction so no-one will vote them so they won't be up..

Stupid BB

I guess, if they are that dumb - which I doubt as Sarah could be heard saying at the end, at least I'm only nominated not being evicted - they will realise their mistake when they do nominations over the weekend.

that's good if they think that they are both good characters

Yes but even Sarah think she's nominated not just got one nomination...

You mean she thinks these are the only two nominations? Well they will find out they are wrong soon enough.