My baby has another mans last name her mom won't change it
I have a17 month old daughter that I had 2 dna tests taken for.her last name is that of her mothers first child's father .basicly she has niether of her parents last names.I live in New York & I'm not sure as to whether a name change should be filed in family or civil court.I have already established I am the father in family court.I have this documented.we were both supposed to sign papers to change th b.c. as well as her last name to her mothers which I didn't mind, but I didn't sign because her middle name is the same as her ex's decease mom which I didn't agree with.now my daughters name is still the same as his although I support her through my own free will & take her for weekends.im not sure what type of actions I should take.anyone with knowledge of nyc courts please help,though any assistance is appreciated.they are also not married or together from my knowledge(he has another child my daughters age as well).my daughter also lives with her granma & not her mom.I can't afford a private eye,but this would help in a custody dispute although I can't really prove it. I work 2 jobs to support my kids & don't have time to 'snoop' myself.I think icovered all bases.