  7  "... and that's the way it is."Drew sat on the stool which was the only other furnishing in the bath cubicle while Anse splashed and wallowed in the slab tub.
Anse was enjoying a bubble bath in the tub. 
mnli hypothesis: Anse was enjoying a bubble bath in the tub.  premise:   7  "... and that's the way it is."Drew sat on the stool which was the only other furnishing in the bath cubicle while Anse splashed and wallowed in the slab tub.