Parents are generally granted authority over children that adults could not be subject to. That authority, the reciprocal obligations it inspires and who may act as a parent are generally treated under a rubric of family law.
These issues include:
Establishing parental rights,
Custody and Support of children and
Rights of children to resist or be independent of paretntal authority
February is Teen Dating Violence Awareness Month. According to healthfinder.gov, "more than 1 in 10 teens who have been on a date have also been physically abused by a boyfriend or girlfriend in the last year" (https://healthfinder.gov/nho/FebruaryToolkit2.aspx).
There are many journals on topics in family law. Perusing the tables of contents of some of these journals may help inform your choice of paper topic.
Legal Rights of Children by 
Child Cases: how America's religious exemption laws harm children by 
Family Law (Oxford Introductions to U.S. Law) by IICLE's are publications from the Illinois Institute of Continuing Legal Education. They provide explanation of the law for a practitioner audience. It contains practical guidelines and references to cases and statutes. IICLE's can be viewed online but only from computers with hardwired connections in the College of Law.
