Yea they will try to seem happy even if they are not, she does not want to show you that she is sad, ofcourse she does not want to do that. If you told her to contact you first maybe you should wait for her. But then again after a month or so, you can make a couple of not so obviouse tries, like a message in a form of “this reminded me of you” and you build a conversation from there , or something similar. I am glad that you did not do the same mistakes as me… I hope you will get her back and be happy, I think you are on the right road, ceep it up!
PS: I hope you use the tactics mentioned in Stage 3 and Stage 4 of this article. They are really helpful.