YOU SAID:

my nan is now crying over a sandwich

INTO JAPANESE

私のナンは今サンドイッチの上で泣いている

BACK INTO ENGLISH

My nan is crying on the sandwich now.

INTO JAPANESE

私のナンは今サンドイッチで泣いています。

BACK INTO ENGLISH

My nan is crying in a sandwich now.

INTO JAPANESE

私のナンは今サンドイッチで泣いています。

BACK INTO ENGLISH

My nan is crying in a sandwich now.