My question is how and not why has she got away with it. It was a punishment for all housemates (including dogface) that all housemates had the freedom to discuss nominations because various (including dogface) housemates had discussed nominations once again this week. The fact that she was not nominated for eviction is down to her housemates not nominationg her, not BB favouritism.
Letb us be honest, two of the biggest rule breakers look to be up this week, so all is very fair