I was watching through all the CBBs and got to CBB14 and only now do I notice in the call task they did in the last week where they heard complaints from viewers about each of them, Lauren's complaints came from a woman called Natalie who sounds a lot like Natalie Rowe. You be the judge but I'm pretty sure it's her.
I'm not good at embing videos, but click on this timestamp to the video
here.