I also majored in Neuroscience as an undergrad, went to medical school, and am now a neurosurgeon. I actually found it helpful to have majored in neuroscience...it certainly helped in medical school, it helped with my research, and it helped during neurosurgery training and board exams. Is it mandatory?...NO. Your friend could probably go anywhere, and there are many good schools in the Northeast.
I went to Penn for both undergrad and medical school, partly because of the neuroscience program. As an undergrad, it is technically called "Biological Basis of Behavior", Neural Systems. At Penn, you can also take undergraduate courses in Wharton (or a combined degree in Wharton), engineering (including bioengineering), and extensive offerings in the College of Arts and Sciences. There is a tremendous amount of research being done at Penn in this field, which makes it easy to become involved in research, and extremely rewarding. Check out this link:
Institute of Neurological Sciences
I agree that Hopkins and Brown are also excellent....there are quite a few programs that are very good...have her look through some web sites of places she may be interested in.