Now, don't jump to conclusions but, in my experience (as limited as it is), if interested a woman will give you other options e.g. "I can't make it this weekend but how about dinner some evening".
Wii - that is exactly what concerns me a bit. She ruled out the options I was providing and didn't recommend one that would work for her. However, there isn't really anything I can do about it, so I'm just taking a chill pill and hoping I am wrong about my intuition. Time will certainly tell.