বন্ধু how much do আপনি talk about?

It depends on the idividual বন্ধু for me. There are two বন্ধু i have told everything and anything, knowing they will not judge me অথবা dispise me and will be able to offer hope and support when i feel low when the memories hit me. Other friends, certain things for me are off limits and i respect their decision if they do not feel like telling me anything.
However - if your friend believes she should know everything about you, but does not respect আপনি enough to tell আপনি everything about her, then i can't see the relationship going anywhere.
আপনি should tell your friend that আপনি respect her decision not to tell আপনি things, but she in turn should respect the same of you. If আপনি do not want to tell her things, she shouldn't push at আপনি অথবা become huffy about it, as that is not what a friend is supposed to be.
It could be she justs wants to help, but all the same, she can easily sympathise and encourage and hold আপনি up দ্বারা the sidelines not knowing anything, then knowing every little detail.