Well, the most obvious truth about relationship violence is that it exists. Therefore, the problem is that a lot of people are afraid to talk about it which is the reason why this issue is not so widely discussed.
The reason why they are afraid is also very clear: they fear for their life, especially when there is no place to go. Lots of women are afraid that they will be found by their partners and that the consequences will be horrifying which is why they decide to stay and continue their suffering.
The primary thing to do in this respect is to make sure that women understand how significant it is for them to speak up. The more often they talk, the easier it will be to tackle this problem. What is more, other victims will follow their example and will do the same.
Apart from that, the most important rule here is not to stay in an abusive relationship. One needs to get out of that relationship as fast as possible.