You may say 'yasashii onna no ko.'
Bijin.
Tokage on'na
いい子 Ii ko
猫娘 (ねこむすめ) neko musume
You may say 'shoujo.'
'Lonely girl' translates to 寂しい少女 (sabishii shoujo) in Japanese.
You mean Babe as in cute girl ? There is no slang for babe in Japanese but a cute girl would be called a Kawaii (Cute) Onna (girl) or Onnanoko
Io sono una ragazza! is an Italian equivalent of the English phrase "I am a girl!" the feminine singular phrase also translates into English as "I am one girl!" according to context. The pronunciation will be "EE-o SO-no OO-na ra-GAT-tsa" in Italian.
Ragazza angelo is a literal Italian equivalent of the English phrase "girl angel." The pronunciation will be "ra-GAT-tsa AN-djey-lo" in Italian.
It's another example of a sentence written by someone who doesn't understand Japanese very well trying to pick up a girl.
"Pretty girl" is just one English equivalent of the Italian phrase ragazza carina. The pronunciation of the phrase -- which also may be translated as "cute, good-looking, lovely, nice-looking, pleasant girl" -- will be "ra-GAT-tsa ka-REE-na" in Italian.
Ragazza stupida! is an Italian equivalent of the English phrase "Stupid girl!" The feminine singular phrase also translates literally as "Stupid girlfriend!" in English. The pronunciation will be "ra-GAT-tsa STOO-pea-da" in Pisan Italian.