Can I emansipate my daughter if she is not living with custodial parent, not going to college, live's with boyfrien and has a newborn child with him??

You can file a modification petition for downward modification of child support. However, you might be surprised at the testimony at the hearing. Is she really living with her boyfriend? The fact that she has a child with him does not matter, in fact, to some support magistrates, it shows her increased need for support. A "child" is emancipated when she is financially emancipated, for example, if she is living on her own, pays her own health insurance, drives her own car, and has a job.