Have you noticed how most blogs say somewhere, "if you are a no-reply blogger, make sure to leave your email address"... for whatever reason (giveaways, comments, etc.) I've had a few people ask how they know if they are a no-reply blogger. If you never get emails back from comments you left that may be one way to tell. But either way, I found a pretty good tutorial for how to fix it, or how to check.
Just note that you have to go to the old dashboard view in google - then it will look like her pictures (in your dashboard go to the top right corner and click on the wheel, and click on old blogger interface). I don't know why they haven't put this option in the new interface yet. Anyway, she has pictures, and in case you get lost you can leave me a comment and I'd be more than happy to help! :) (just make sure to leave your email address or check back here for an answer in the comments!) :)
tutorial here at Sweet Simplicity (I simply googled for a tutorial, so I can't vouch for anything else on this blog. fyi).