Law schools have historically been a cash cow for Universities, so true full rides are rare – and extremely competitive.
Harvard, Yale, and Stanford are need-based only. Many of the top schools will offer up to full tuition, however. Northwestern offers $120k over three years for those accepted ED. Named scholarships are extremely competitive. For example, Chicago offers a Rubenstein, Duke has a Mordecai.
Yes, it is reasonable that she would be competitive for a full tuition somewhere, but whether she wins one is up to the soft factors in the application. NYU, for example, leans towards social justice.