As a girl, I absolutely appreciate company more than gifts and money. The only time I do appreciate it is when I get bought a drink at the bar, but even then after the first drink I feel fine buying my own.
I hate when guys buy me gifts all the time, it's like they're trying to buy me. If Laura feels that you should keep buying her stuff and paying for everything then she's obviously just using you anyway.
I feel most treated like a princess when my boyfriend empties my bins or tidies my room when I'm feeling tired or down. Sometimes he'll make me dinner or share a drink that he's bought from the shop. This is lovely.
Basically, a princess (personally I wouldn't use this metaphor) has subjects, therefore just make sure she's comfortable and if she needs any favours doing or help with anything.
Also, consider how she is way out of your league. If it's to do with money then she obviously shouldn't expect you to buy her things. If it's appearance then make an effort - jog a little, eat healthily, wash your face etc. If it's personality or intellegance then broaden your knowledge of science, politics or try to help people out for free. Volunteer so you can get experience for a new job so that you do have some money. Increase your life experiences by meeting new people and introducing them to her. Research campaigns you're interested in and explain your interests to her.
