But can Elaine or Yasmeen bring themselves to tell her?
As Yasmeen and Elaine survey a pile of empty pizza boxes at No.6 with revulsion, Elaine reckons it's time Cathy started pulling her weight.
Ignoring Brian's calls, Cathy tells Yasmeen that she feels safe at her house. Clearly with no intention of going anywhere, Cathy takes delivery of an exercise bike and Yasmeen and Elaine share looks of dismay.