Um...you didn't say her brother's name. The names of the siblings should be related. For example: Mo Chunhua, Mo Qiushi. I can only ignore this problem.
Her personality is changeable, but she always prefers one personality, or nature.
Prefers to be cold: Mo Aleng
Prefers to be aggressive: Mo Alie (a bit like a boy)
Prefers to be "squeamish": Mo Jiaolian
In the end, it still depends on the author's opinion. After all, only the author knows his novel best.
Another bonus for you to use as a reference: What do the letters of your name mean? The first letter of each word: a. accept. b. trust. c. care. d. understand. e. appreciate. f. free. g. pay. h. Heart. j. envy. k. kiss. l. like. m. Mature. n. vitality. p. sense of security. q. Quiet. r. reason. s. share. t. gentle. w. wait. x. Introverted. y. miss. z. Enthusiasm