Love is an action word a verb. Anyone can say words they don't mean so we must pay attention to actions to tell us the real truth. Does she show you that she loves you? She told you some of the ways that you show her that you love her and that is why she loves you back.
If everything is fine in the marriage and you're basically happy, then why are you making this an issue?
You should read the book The Five Love languages. I think it will reveal to you how you love one another. Not everyone shows each other the same way.
“The willingness to accept responsibility for one’s own life is the source from which self-respect springs.” ~Joan Didion