It seems as if she want to try all the way she could to get rid of her mother’s tongue and the influent that her family imposed on her. When I read to here my feeling is pretty complicated. On the one hand she has the right to pursue what she want and Since she grew up in American, China is only a remote place that is not related to her daily life, so her mother’s tongue can’t bring her anything in her future. On the other hand, she is Chinese’s offspring and she should respect her own traditional cultural. Although she does not like her mother’s tongue but she should accept and be proud of it.
This paragraph is what I just added in published version. I think author must be in a dilemma at that time. I believe she love her mother for sure and want to accept her mother's tongue, but the world in front of her is too attractive and she does not want to be limited by her family. It is a question she will find an answer for herself soon.