I just went and filled out a custody petition, can i take and hold my child at my house until family court? (NY LAWS)

I'm the father of a 5 year old girl. Her mother and I broke up about 3 years ago. Me being a nice guy and giving her the benifit of doubt let my daughter reside at her mothers house with the understanding that I would be picking her up and taking her for large periods EVERYDAY and overnights at least on friday. With this said, I also give her $50 a week for support. I provide my child with all of her financial needs (health ins, food, clothes). She also has her own bedroom at my house with anything she could possible need. Needless to say it's been slowly going down hill everyday since the origional agreement. Now just yesterday, the mother of my child harrassed my girlfriend over her phonr for hours, then she followed her accross town and assulted her in my driveway.Can i keep my child?