Table:
# | Name | Age | Disappeared | Found
1 | Wendy Lee Coffield | 16 | July 8, 1982 | July 15, 1982
2 | Gisele Ann Lovvorn | 17 | July 17, 1982 | September 25, 1982
3 | Debra Lynn Bonner | 23 | July 25, 1982 | August 12, 1982
4 | Marcia Fay Chapman | 31 | August 1, 1982 | August 15, 1982
5 | Cynthia Jean Hinds | 17 | August 11, 1982 | August 15, 1982
6 | Opal Charmaine Mills | 16 | August 12, 1982 | August 15, 1982
7 | Terry Rene Milligan | 16 | August 29, 1982 | April 1, 1984
8 | Mary Bridget Meehan | 18 | September 15, 1982 | November 13, 1983
9 | Debra Lorraine Estes | 15 | September 20, 1982 | May 30, 1988
10 | Linda Jane Rule | 16 | September 26, 1982 | January 31, 1983
11 | Denise Darcel Bush | 23 | October 8, 1982 | June 12, 1985
12 | Shawnda Leea Summers | 16 | October 9, 1982 | August 11, 1983
13 | Shirley Marie Sherrill | 18 | October 20–22, 1982 | June 1985
14 | Rebecca "Becky" Marrero | 20 | December 3, 1982 | December 21, 2010
15 | Colleen Renee Brockman | 15 | December 24, 1982 | May 26, 1984
16 | Sandra Denise Major | 20 | December 24, 1982 | December 30, 1985
17 | Alma Ann Smith | 18 | March 3, 1983 | April 2, 1984
18 | Delores LaVerne Williams | 17 | March 8–14, 1983 | March 31, 1984
19 | Gail Lynn Mathews | 23 | April 10, 1983 | September 18, 1983
20 | Andrea M. Childers | 19 | April 14, 1983 | October 11, 1989
21 | Sandra Kay Gabbert | 17 | April 17, 1983 | April 1, 1984
22 | Kimi-Kai Pitsor | 16 | April 17, 1983 | December 15, 1983
23 | Marie M. Malvar | 18 | April 30, 1983 | September 26, 2003
24 | Carol Ann Christensen | 21 | May 3, 1983 | May 8, 1983
25 | Martina Theresa Authorlee | 18 | May 22, 1983 | November 14, 1984
26 | Cheryl Lee Wims | 18 | May 23, 1983 | March 22, 1984
27 | Yvonne "Shelly" Antosh | 19 | May 31, 1983 | October 15, 1983
28 | Carrie Ann Rois | 15 | May 31 – June 13, 1983 | March 10, 1985
29 | Constance Elizabeth Naon | 19 | June 8, 1983 | October 27, 1983
30 | Kelly Marie Ware | 22 | July 18, 1983 | October 29, 1983
31 | Tina Marie Thompson | 21 | July 25, 1983 | April 20, 1984
32 | April Dawn Buttram | 16 | August 18, 1983 | August 30, 2003
33 | Debbie May Abernathy | 26 | September 5, 1983 | March 31, 1984
34 | Tracy Ann Winston | 19 | September 12, 1983 | March 27, 1986
35 | Maureen Sue Feeney | 19 | September 28, 1983 | May 2, 1986
36 | Mary Sue Bello | 25 | October 11, 1983 | October 12, 1984
37 | Pammy Annette Avent | 15 | October 26, 1983 | August 16, 2003
38 | Delise Louise Plager | 22 | October 30, 1983 | February 14, 1984
39 | Kimberly L. Nelson | 21 | November 1, 1983 | June 14, 1986
40 | Lisa Yates | 19 | December 23, 1983 | March 13, 1984
41 | Mary Exzetta West | 16 | February 6, 1984 | September 8, 1985
42 | Cindy Anne Smith | 17 | March 21, 1984 | June 27, 1987
43 | Patricia Michelle Barczak | 19 | October 17, 1986 | February 1993
44 | Roberta Joseph Hayes | 21 | February 7, 1987 | September 11, 1991
45 | Marta Reeves | 36 | March 5, 1990 | September 20, 1990
46 | Patricia Yellowrobe | 38 | January 1998 | August 6, 1998
47 | Unidentified White Female | 12–17 | Died prior to May 1983 | March 21, 1984
48 | Unidentified White Female | 14–18 | December 1980 – January 1984 | January 2, 1986
49 | Unidentified Female | 13–24 | 1973–1993 | August 2003

Question: which victim was missing the longest?
Answer: Rebecca "Becky" Marrero