Do i have to still pay child support if my daughter receives EMA?

I pay 150 a week for my 3 children that i dont see due to their mum twisting their minds. My daughter is now 17 and receives EMA. Does this mean I dont have to pay child support anymore. Its not that i begrudge my daughter having any money but I do her mother due what she has put me and the children through. She works full time as a nurse and receives the money off me, tax credit and child benefit. she is raking it in and im struggling to live.