They are, but she already knows something's up.

[Its not good news, but Naruto will continue to argue that it should be out in the open.]

If I died- I mean, of course I'm not gonna! But if I did, and I didn't tell you, but something was obviously wrong, then later on you found out anyway, how mad would you be?

[He knows he would be pissed if it were the only way around, but only out of grief, or the fact he wasn't able to share the burden.]