I'm worried?

I recently have been reunited with my bmother and we haven't seen each other but we talk often and have been emailing each other everyday all day. She seems really nice, although we have not meet yet, I feel as though I know her already. I guess I'm worried that I may not be up to her standards. I guess I'm worried that she won't like me when we do actually meet. Is this foolish? I can't help but to feel this way. I'm 32 y/o why should I care? Can anyone offer me any support on this issue?:(