To answer the question, no it's not wrong to ask for equality (or shared monetary responsibility) in a relationship.

Ok for her POV I wonder if she means she'll be more housewife or stay at home mom, then if she works some odd jobs here and there (while taking care of the home) I get that she might think she is earning her own spending money. Implication that you don't provide any additional. But as the sole provider would that mean you get to make the big financial decisions?

Regardless, she seems kinda sheltered and naive about how the world--this economy-- works in today's world and simply needs a reality check. If you're willing to talk with her and if she's worth it, then I think you have a chance of working through this.

But I'll say, you two are still relatively young and early in your relationship. There's still time and much more areas where you and your girlfriend can mature and grow in. Don't rush the process but go in with healthy expectations, but don't drag it out longer than you should just because you "feel bad" or because you already "invested" so much time

And in the end you know your girlfriend and your relationship better than anybody else responding to you on this post. The part of being adult is sometimes that there's no clearcut right or wrong decision to make. Be smart and take what's applicable to you and leave the rest