Violence is never acceptable. If she has children or other dependents, confirm her concern that the violence is damaging to them. If you can, let her children know you're there for them too. Rehearse if possible. Conceal the kit or leave it with someone you trust.
All women are vulnerable to depression, regardless of race, age, or income.
Depression affects your body, mood, thoughts, how you eat and sleep and how you feel about yourself. Depression is treatable. Untreated depression is the number-one cause of suicide. Talk to your health care provider about professional help. But remember, even with this help you still need support from family and friends.