-LRB- CNN -RRB- -- A Florida court has approved the divorce of the father of Haleigh Cummings , a Florida girl who disappeared in February , and the girl 's stepmother , a key witness in the case . Ronald Cummings divorced his wife , Misty , who was the last person to see his daughter , Haleigh . Ronald Cummings , 25 , cites irreconcilable differences in ending his short marriage to his 17-year-old wife , whom he married more than a month after Haleigh went missing from her father 's home in Satsuma , Florida , on February 9 . Cummings has made several public pleas for information in her disappearance . Misty Cummings , then known as Misty Croslin , was the last person known to have seen Haleigh the night she disappeared from the family 's rented mobile home . The teenager said she tucked Haleigh and her 4-year-old brother into bed about 8 p.m. and went to sleep herself two hours later , but awoke at 3 a.m. to find the girl missing and a cinder block propping open a back door . Ronald Cummings called police and reported his daughter missing when he returned from work at dawn . Investigators have said they do not feel Misty Cummings has told them everything she knows . `` The police have been telling me that I 've been keeping Misty under my wing and that 's why she has n't talked to the cops , '' Ronald Cummings told a HLN 's `` Nancy Grace '' producer earlier in October . `` So now , here you go , I divorced her . So now go find my baby . '' The Putnam County Sheriff 's office said in August that `` the evidence and investigatory effort has minimized the likelihood that Haleigh 's disappearance is the work of a stranger . '' Ronald Cummings and Crystal Sheffield , Haleigh 's mother , are not considered suspects , police said . `` Investigators believe that Misty Croslin-Cummings continues to hold important answers in the case , '' the sheriff 's office said in a written statement . `` She has failed to provide any sort of detailed accounting of the hours during the late evening and early morning of Haleigh 's disappearance . Furthermore , physical evidence at the scene contradicts Misty 's sketchy account of her evening activities . '' Croslin has not been named a person of interest or suspect in the case . In televised interviews , Croslin has said she does not know what happened to the little girl , while also saying she believed `` the other side of the family '' knows where she is . The couple lived together for about six months before marrying in March . Under the divorce settlement approved Thursday by a St. John 's County court , both sides permanently and irrevocably waive any rights to alimony and other types of financial payments .