Once you start evaluating her in terms of your wants and requirements and whether she delivers for you, you've fatally sabotaged both your and her happiness. By doing so you make the relationship all about you and your wants. I guarantee that no-one can deliver.
It's not. Quite the reverse. For both of you.
Rather ask yourself: Can I see myself loving and serving and spending myself for this woman, putting her wants and needs and safety and good before mine? Answering that requires getting to know her well, and that takes time. If you jump the gun and enjoy the fruits of marriage before you've made the irrevocable commitment to mutual lifelong fidelity, what's to stop you or her from doing the same again with someone else in the future? Few pains are more agonizing than a heart broken in love. There's a simple check only you can answer in your own heart, and it requires self-knowledge and brutal honesty: Is her happiness more important to you than your own? Until you can unequivocally say yes, you're not ready to cement the bond. And of course she needs to do the same.