Lack of economic independence is one of the main causes women cite for remaining in violent situations.
Many women living in poverty have a lower sense of self-worth which makes it harder to assume independence.
Women have difficulty finding somewhere to live after leaving a shelter due to a lack of affordable housing and may return to a violent situation. 
9. Mosher J, Evans P, Little M, Morrow E, Boulding J & N VanderPlaats. Walking on Eggshells: Abused Women's Experiences of Ontario's Welfare System. Final Report of Research Findings from the Woman and Abuse Welfare Research Project. April 5, 2004. http://dawn.thot.net/walking-on-eggshells.htm accessed August 28, 2007