Relax, have fun and just let the relationship run it's natural course. Obsessing about age and differences is counterproductive. If she is attractive and you are getting nervous, feeling butterflies in your stomach before you meet up with her, thats great, those are all good things! Just enjoy your time together, see where it goes. If she was hot and 23 but poor, you probably would not ask for advice, so she is hot, well off and older....big deal, embrace the differences and enjoy!