Where there's a will there's a way...
The dissertation "Language Learning in Adulthood," by Asha Smith of Stanford University explains how even though some adults are eventually able to conquer mastery of a second language through diligence and hard work, those that had second language exposure at a young age were able to more efficiently learn a new language. While Mrs. Li seems to hint at the validity of this statement, she also shares her own experience of not learning Chinese until she was in her 20's, and she also mentions that she would not have rather been exposed to English at an extremely young age and in doing so sacrificing her genuinely Chinese upbringing. The main message of her explanation that is the only one that slightly differs from my other group members' interviewees' messages is that although it may be effective for some people to learn a second language at early stages in their lives, she was very happy and satisfied as well as successful learning English later in life, due to her will to do so.