N.H.
Yes, kids like to question but some questions get rather annoying after a while. Especially when it feels like she should have this one down pat. Try to reverse it on her. Ask her do you love mommy? Do you love daddy? Do i love you? Maybe you will find teh root of the question. It could be she simply is trying to understand what love really is. It can be confusing.... I love you, i love pizza, i love this tv show, oh i love those shoes. This is where you can begin to teach her the differences. That you can use actions also. Does mommy show you she loves you? She is just probably trying to work it all out.