Grave has a different English date Apr 21, 2012. Plaque has Apr 12, 2012. 

The hebrew date on the plaque 29 Nisan 5772 agrees with the English date on the grave. Consequently I'm considering the plaque English date as a typo. 

https://www.findagrave.com/memorial/117327835/charlotte-rose-abrahms (sharon memorial park)

E. Ganin July 2026