Can a pregnant 17-year-old female living in NYC leave her parent's house to move in with her boyfriend and his family and not be forced back home by her parents?
No. The legal age of majority for New York is 18. Parents can
file a petition in NY Family Court requesting the minor be returned
to their custody. The process is simple and always granted unless
there is a record of abuse or neglect of the minor child by the
parents. Once an order has been granted the parents submit it to
the law enforcement agency that has jurisdiction and the minor will
be taken into custody. Any adult who knowingly allows a minor to
reside in their home when the minor's parents object to the
situation is subject to criminal and civil action.