Maybe she's a little shy/reserved? I would casually drop hints like you think its so sexy when the woman initiates. Hopefully she can pick up on those hints and will want to make you a happy camper. If she can't pick up on the hints I would maybe talk to her about it, not in an accusing manner where she'd feel attacked but say that it would make you feel more desired or whatever. Steer clear from the "you never's" and use things like "I wish" or "I feel" so she doesn't feel under fire. If she feels attacked she's not going to want to initiate, she'll feel obligated to because you called her out and probably not enjoy herself.
So, so you think you can tell Heaven from Hell,
blue skies from pain.
Can you tell a green field from a cold steel rail?
A smile from a veil?
Do you think you can tell?
And did they get you to trade your heroes for ghosts?
Hot ashes for trees?
Hot air for a cool breeze?
Cold comfort for change?
And did you exchange a walk on part in the war for a lead role in a cage?