Is keeping her past a secret from St. Jonh and his sisters a detrimental act to jane's future ?

Jane told St. John and his sisters some of her past but she did not reveal many specifics. The family knows that Jane is an orphan, how she was, "... brought up by a dependent"(349), and that she was educated and also ended up teaching in the same institution where she herself had been taught,"...I spent six years as a  pupil, and two as a teacher- Lowood Orphan Asylum'(349). I wonder whether in not telling the family the entire truth of her past, or at the least her true name, that she is holding herself back from a profitable future. I believe that as a female that Jane needs to vent her emotions, and she has not had the opportunity to do that, she is holding in her emotions and she could end up having a mental breakdown. I also believe that if Jane should be in trouble of some sort that the family will not know to trust her, or will not know how to help her if the situation should arise. The keeping of secrets is a terrible thing for the health of ones body and mind, it tears away at your heart an takes all of your concentration to keep under tabs, Jane will eventually have to fess up to all that she has been through but in the mean time she will suffer for her actions.