Not the opener that matters, it's the subsequent

Remember, it's not the opener that matters
it's always in the SUBSEQUENT lines and things you say AFTER you've opened her that makes the difference.
Next time you see her glancing your way... SMILE.
If she smiles back, walk up to her and ask
"Hi, beenseeing you around you quite a bit, let me guess, Law?"
The point is for you to DO SOMETHING.

If you're feeling shy to go talk to her just yet, your smile alone will be just as good.
Just as long as you keep smilling whenever you bump into her and she smiles back, you'll become FAMILIAR with each other
You're no more a stranger and after a while, when you actually DO say "hi" to her, it won't come off as if you're trying to hit on her because it's now a FRIENDLY gesture between two people.