You're arguing (often) about money? What is she doing? Is she spending your money or not saving hers? If you're not financially compatible, if she's in a lot of debt or if you save and she spends everything of her own then she has entitlement problems that maybe, just maybe you're better off not being in a relationship with her. Why continue on just to end up divorced? You're not getting along at 2 years, you're completely stressed and you're not being your best around her. Think about it.
It takes much more then love for a relationship to endure.
“The willingness to accept responsibility for one’s own life is the source from which self-respect springs.” ~Joan Didion