You have over invested massively. Trying to get her to drop all her commitments because of you would look petty and desperate.

The way I see 'high value' is that you are giving her the gift of being with you. You are awesome and if she won't invest in you then that's her loss.

Personally, I wouldn't want a girl who would drop everything for me as it reeks of desperation. On the other hand, a girl that can't even give me the time of day isn't one I'd want to be with either.

Finally, I personally made the mistake of over investing in a girl. Just recently, I stopped a girl, took her to an art gallery and had a coffee with her. I also sent her a text and gave her a missed call.

Whilst that didn't put me at a huge loss, that's an enormous amount of time to spend with a girl you've only just met. It would annoy me if she didn't text back, but I'll get over it.