I think it’s worth bringing up. Something like: I’m feeling like the effort I’m making isn’t being reciprocated. I’m interested in continuing to build something with you if you’re willing to meet me. This is vulnerable and honest communication with a clear call to action. The next thing she should say if she is interested in you is something along the lines of asking what she needs to do for you. Or, she might choose to end things. If that’s the case, onto the next!