There's no simple answer. It depends on the girl herself. Girls like the ones Aztec posted exists. The loyal ones also exist. If you bait the girl with money, expect a gold digger. Simple as that. Not all women are gold diggers. Some women just want your time and company, some want your money. I think you're looking at women as too simple a creature.

You think she might feel like she isn't gaining anything by dating you since there are better candidates out there, but she might also think you're the best she can do or you're just the one for her.

When you see people more successful in life, you don't immediately want to be their friend or partner right? You just set an aim to achieve what they have. Same with girls. They also want to achieve that success. Weak girls are the ones who leech off their male partners to get what they want instead of working honestly for it. It's the 21st century. Girls aren't the weak princesses you they are    The ones who are, they're just giving other females a bad name or as popularly coined, the pump and dump types.

Enjoy the time you spend with this girl of yours. If you feel inadequate, try to work towards achieving your goal. If she can't stick by you, she isn't worth it anyway.