If there is someone hurting you then killing them is not the answer. Removing yourself from their presence is.
No one can force you to remain in such a situation, you always have the choice to leave.
If you are a minor and it is your parents, consider emancipation along with giving the TRUE reason why you wish to be emancipated. Government aid will help you to get a job and even give you classes on how to balance bills and groceries. Another option is living with another willing relative, such as an aunt, uncle, or grandmother.
If you are an adult, then you have no excuse and it is your own choice to remain in an abusive environment or leave. Insecurities give rise to people remaining in such situations, but you and only you can grasp the willpower to make a change.
But magick can assist! I don't usually give spells, and I hardly ever use anyone elses chants. But I have always been very fond of one, I have it memorized and it has always helped me in times of confusion or trouble. It is a very popular chant for inner strength and you can say it to yourself or outloud anytime anywhere, although for a more dedicated effort, I would suggest using it as a mantra with a candle flame, a black feather and bit of anise seed.
"I call the light of golden rays,
I seek protection thus I pray,
For heavenly forces by my side,
Angels, sages, spirit guides,
Or wolves who walk with cunning skill,
Come to my aid
Come at my will
Black bird soaring light my path
So I may be victim to no one's wrath
And when my journey at last succeeds
To all those who aid me, blessings."
I've also seen the last line as
"When my journey knows success,
To all those who aid me God/dess bless"