I know a couple girls who have done this in the past to me - they will put up a b!tch shield and play hard to get because
A: They want to make sure that you're NOT going to get needy and lame if they fvck you around a bit (Sh!t test) Usually from hotter chicks.
B: They want to gain power
C: They want you to chase abit as they are aware their SMV is lower than yours.
So, it is pretty easy to be able to tell whether your in the above situations or their distance is due to low interest.
When she throws you a curve ball, Que: Amused Mastery, Assume the Sale, and then Drop off the face of the earth. She will reach out with something dumb or irrelevant to tell you. (BIG GIVEAWAY) And then when she does, aloof/jerk game, or don't respond at all. Fall off the face of the earth again. From there, reach out or next time she reaches out, run with the same frame and then ask for a meetup. You will have some good tension built and she won't be able to bluff anymore. You will have passed all 3 of the above scenarios because you were a good sport and played her game a bit without getting needy, shook, or giving up.
Unfortunately, in your situation, it sounds like she's not interested as she didn't counter offer. Didn't even give you a specific excuse as to why she can't meet, and hasn't thrown you any other bones.