Answer:
Preventative detention
Step-by-step explanation:
Preventative detention is a form of incarceration that is given when the detained party is thought of as harmful to the society.
They are detained to prevent further acts of violence or crime in the community.in which they live.
In the given scenario Cathy has a history of physical and mental abuse of her stepchildren.
Releasing her will most likely lead to further abuse on the step children.
This was done to prevent further acts of violence from her.