Low and behold, I was wrong! It's on your end (the commenter's), not mine!
Turns out, some commenters are "no reply" bloggers. What does that mean? It means there is no way to reply to a blog comment and ensure that person sees the response. Basically because your email address is not attached to your name. So although I can reply to you within the comment section, if you don't ever go back and re-read through the comments, you'll never know. :)
When your email address is attached to your name, the blogger (me) can reply directly to the commenter (you) and it will show up in your inbox. Cool, right?
Likewise, fellow bloggers, did you know you could simply hit reply to the comment notification email and as long as the commenter is not a "no reply" blogger, you can respond to their email address?
Anyway, just sharing a bit of what I've learned over the past year. I know most of this is old news to many of you, but trying to help those that may still be in the dark.
I found a couple of tutorials on other blogs showing how to change your settings so that you are not a "no reply" blogger! It takes, like, 30 seconds to do! Follow these links for a better explanation and to ensure you are not a "no reply" blogger. You're welcome. ;)