Its different depending if you mean 'Poor girl' like 'Aw, she's sick, poor girl' or 'She has no money type poor girl'
i dunno what is "girl" in Japanese but,"crazy" in Japanese is "baka/baka yarou"
Wolf girl is ookami onna in Japanese. 狼女
悪い女の子 (wa ru i on na no ko) is a way to say 'bad girl' in Japanese.
Hou Onnanoko.
女の子(onnanoko)
You may say 'onna no ko.'
Because Japanese doesn't have an equivalent to words like "the," you may simply say 'onna no ko,' written in Japanese: 女の子
小さい女の子 (chiisai onna no ko) is the Japanese equivalent of 'small girl'.
You may say 'shoujo.'
You may say 'onna no ko.'
小さな女の子
You may say 'yasashii onna no ko.'