Mistress @evilwoman always keeps her slave property in the dungeon where they belong. Part of the slave training process is teaching them they are nothing more than property, mere objects to serve a specific purpose without any needs or desires except servitude.
This involves giving them just enough food and water to enable them to carry out their slave duties. Occasionally the Mistress will give them extra "nourishment" for which the slave must always be truly grateful and thankful for - even if it comes direct from her body!
Imagine what it must be like to have a funnel inside you to allow you to receive all the nourishment on offer - be careful not to spill any!
*Obviously I cannot show all of this clip so use your imaginations*