Here is the original item:
After Deidre saw the tiny balance on her ATM
receipt,
(A) she
realized,
(B) that
her meals for the next week would consist of cheap
food,
(C) such
as peanut butter sandwiches and instant soup.
You wanted to do this:
After Deidre saw the tiny balance on her ATM receipt.
She realized, that her meals for the
next week would consist of cheap food, such
as peanut butter sandwiches and instant soup.
A period after receipt makes a fragment. After Deidre saw ... is a subordinate clause, which cannot stand alone as a complete sentence.
You might want to review the rules.