Sara trying hard to make Darnell look bad whilst protecting Rex
 

Her plan is so see through! LOL

Without condoning the things Darnell and Rex were saying, at the end of the day they were both joking, as they've said. But Sara is trying so hard to get Darnell into trouble, moaning to BB and the cameras about him, for the exact same crime that Rex is responsible for, but because she kisses Rex's arse, she's bending over backwards to make out like he's done nothing wrong. All politics.

She's trying to get the best of both worlds. What a sneak.

how is she trying to get him into trouble by getting bullied?

I think your oblivious if you don't think Darnell has been attacking Sara for the past week or two. Rex is just rex, and he was kidding, sara knows that. But there was malicious intent behind Darnell's words.

Rex's attacks are still attacks. Whether he back tracks or not.

The point is, Sara is trying very hard to make sure people think Darnell's attacks are malicious and serious but Rex's are friendly and fun.

In reality, there is very little difference between what Rex and Darnell are doing.