Child Custody Lawyer
I have reviewed thousands of criminal dockets and criminal histories and I do not recall every seeing "NINF" as a disposition. You may want to contact an attorney in the county where the case is docketed to further review the matter.
This response does not create an attorney / client relationship and should not be relied upon to make decisions in any case. It does not substitute for hiring your own attorney and consulting with him or her to provide in depth legal advice.