...but maybe I'm not.

Hi. I'm not sure if this piece of dialog work.

You think you're the only one who's experienced losing someone close? I lost my brother. He died about two months ago. (long pause) You know, I was afraid I'd be a complete wreck, and that it would be obvious to everybody... but maybe I'm not. So maybe I don't know how you feel at all.

Would "maybe I'm not" sound completely natural here (to mean 'maybe I'm not a wreck') or would you prefer one of these instead: "but maybe I'm coping/doing/handling it/dealing with it a lot better than I thought."

If the latter, which one of my suggestion would sound more natural when talking about grief?

Thank you a lot.