Finally, in some relationship breakdowns there is the problem of domestic violence. Victims of domestic violence should never hesitate in seeking legal advice on the protection that they can get.
A court can make orders preventing anybody from using any form of physical violence against anybody else. They can also order users of violence out of the shared home, and in appropriate, and especially repeated cases, they can jail or otherwise punish the guilty party. So nobody ever needs to suffer domestic violence. Urgent legal advice should always be taken.