Sioux Falls, SD (KELO AM) – Sioux Falls Police are asking for the public’s help in locating a missing woman. 20 year old Sabrina Marshall was last seen on December 30th. Very few details are available at this time on her potential whereabouts or where she was last seen, however if you have seen her or can help fill in the blanks on her location, please call police at 605-367-7000.