Children may portray a wide range of reactions to the exposure of domestic violence in their home. The preschool and kindergarten child does not understand the meaning of the abuse and may believe they did something wrong, this self-blame may cause the child feelings of guilt, worry , and anxiety.  Younger children do not have the ability to express their feelings verbally and these emotions can cause behavioral problems. They may become withdrawn, non-verbal, and have regressed behaviors such as clinging and whining. Other common behaviors for a child being a victim of domestic violence are eating and sleeping difficulty, and concentration problems. 
My wife has stage 4 inflammatory breast cancer. We are doing everything we can to stop it. The alternative treatments cost us around $200 a week. We have slowed its progression but we cant stop it. I am watching helplessly as it consumes her. The cancer is all the way through to the chest muscle and has broken through the skin of her breast (google fungating tumor if you feel daring) . It feels like all I do now is work and deal with her cancer. She has to change her dressings twice a day. This can take an hour and last night took . Then there’s all the supplements and special foods and the endless research.