If it is not by your choice or agreement...
Cold water only (and always), in an outdoor shower, in the winter, as your only means of cleaning yourself, is just another form of torture and deprivation.
Just think about having to have sexual relations (in this case RAPE by Garrido), and this being the only means available to clean up afterwards.
While I understand the original point Natal was making, I second this. Jaycee was a young girl in shock (emotional and physical) and this is the only way to clean herself that she had? Sick. And cold water showers every day while being pregnant, possibly in the winter? Did she have to wash the babies out there, too, when they were small? Babies can't regulate their body temperatures like adults do. This could have killed them.