That level of licking is NOT something everyone is into.
Now, if they were to take baths and THEN share the 'joy', or have fun with each other while bathing, Momone's prison mates are less likely to end up as bloodied corpses on the ground.
How the hell do these women not know about Momone? The underwater prison is the place for 'bad bitches'. Like, "Why is this seemingly timid woman down here?" Someone should've been a little curious and asked around, or word of mouth spread to them somehow...