我不叫女汉子

This implies 'I'm not a tough/tomboyish girl'. The term 'woman hank (女汉子)'is used in China now to describe a woman who is stronger, more independent, maybe acts like men rather than the stereotype feminine lady. The name wants to tell other people she is indeed a feminine girl, but it also contains some hints of self-deprecation about herself, like admitting she doesn't have that strong personality yet but might secretly desire for that.