The cleaned gravestone seems fairly legible. Thank you!
Still not terribly legible, and it would have been helpful if you had linked to the memorial page instead of just the picture, but here goes:
hier ruhet here lies der ??? Leichnam the ??? body von Magdalene Keim of Magdalene Keim eine geborne born Hochin Hoch wurde geboren born im December 1736 in December 1736 und starb and died den 21. April 1804 April 21, 1804 war alt worden reached the age of 73 Jahre 4 Monate 73 years, 4 months