Yep, I do agree with you, Stu.
Sissy's not my favourite housemate by any means (see my 'virtual nomination'!!) but I did admire her for following up her chat with BB in the diary room by actually talking to Nush about her concerns.
Incidentally, did you notice how the conversation between Nush and Sissy started with Sissy telling Nush how upset she had been with her . . . . and ended with Sissy actually apologising to Nush for upsetting her about something else?

I thought that was VERY clever. There's more to Nush that meets the eye!