In the quoted part of her email, she is baring her soul to you. She is admitting that her personal development has stopped because she doesn't feel she can grow as a person within the marriage, because she didn't get a chance to do it before getting married. She is afraid that will hurt your feelings and make you feel like she didn't want to marry you, which isn't what she's saying. She is saying that she didn't follow the proper order of her own development by getting married so young, and now she's paying the price for it.
THAT, I do see. I'm just not seeing where that equates to anything about "effort on the part of (my) W to improve (my) sex life."
