NAME INTERPRETATION crying :
弱音 (Yowane; negative sayings/thoughts)
ハク (Haku; roughly translated as utter.)
Her first name and last name make a play on words "yowane-(wo)-haku" (弱音(を)吐く), meaning to say negative thoughts or to show white feather. Her white hair is from ハク, which has the same pronunciation with 白 (white).