Sounds like she's already working plenty hard just to go out of her shell and be with you. I'm sure this is something you already know, but being in love doesn't mean the other party is going to act towards you in exactly the way you want.

But on the other hand, no matter how much she loves you (that includes the brightening sparkling business), if it feels difficult and tiring to be in love with her, then guess what? That's because it IS difficult and tiring. By all means, press the issue-- gently, but you have to let her know that you can't read her mind. Because the alternative is living in a vicious cycle of doubt and stress, until either she realizes the emotional breakthrough you've been wanting all this time, or you get tired of it and dump her.