Monica Clements is buried in Oakwood Cemetery in Allegan. She is in lot 658 along with an infant, no name listed. Lot 658 is in Potters Field, it's in the East half of the cemetery on South Ave.. Check this link for the map, the lot is at the end of Rossman Street.
http://www.usgwarchives.net/mi/tsphoto/allegan/oakwood.htmBe sure to click the Photo link for Oakwood Cemetery East Half to see the map. You would have to contact the City of Allegan to start the headstone process, 269-673-5511.
There are no online transcriptions for Oakwood Cemetery except for the ones that have headstone photo's so I called today.
Jeff