Nope don't think that bro. Again she is freaking testing you without fail. She is probably really shy. Girls have been notorious for calling a dude back months later all ready for something. She is probably trying to get you off your game.
Show her some more interest. Again give it a couple of months and space out your contact with her. My suggestion is to text her again how happy you were to have met her. Start talking about yourself and how busy you are. Bust her on not returning your stuff. Say something like "I am happy I met you and I would like to see you but you are acting like a tease
."
Keep trying buddy but after 3 times calling and 3 times texting with no dice go ahead and wait a couple of months then try again. If she doesn't pick up on it by then forget her and move on. Also try to build some more rapport with her in person as this may increase her IL and could cause her to call you out of the blue one day.