"Forever a sister" is an English equivalent of the Italian phrase una sorella per sempre.
Specifically, the feminine indefinite article una means "a, one." The feminine noun sorella means "sister." The preposition per means "by, for, through." The adverb sempre means "always."
The pronunciation is "OO-nah soh-REHL-lah pehr SEHM-preh."
Sempre in Italian means "always" or "still" in English.
"Forever your beautiful sister" in English is Per sempre tua sorella bella in Italian and In perpetuum tua soror pulcherrima in Latin.
Sempre per sempre in Italian means "always (and) forever" in English.
Sempre baci in Italian means "always kisses" in English.
Sempre delizioso! in Italian means "Always delicious!" in English.
Sempre qui in Italian means "always here" in English.
Germania per sempre! in Italian is "Germany forever!" in English.
"Always" in English means sempre in Italian.
"Always and always" is a literal English equivalent of the Italian phrase sempre e sempre. The pronunciation will be "SEM-prey SEM-prey" in Italian.
Sorelle per sempre! in Italian means "Sisters forever!" in English.
Per sempre tuo in Italian means "Forever yours" in English.
Sempre la tua in Italian means "always yours" in English.