Today’s second glitch:
Capitalize the first word of a sentence. (Seriously, no writer should ever need to be reminded of this.)
Technically, the beginning ought to be To whomever. (Object pronoun, not subject: you’d say to her, not to she.)
Capitalize the first word after the salutation in a letter.
Replace the comma after remains with a period.
“To whomever finds this message, They erased us. This is all that remains. Remember us, please.”