Okay.. but If there’s no chance, should I just block her completely? After returning her stuff.
That depends on you. Will you think about her too much if you don't block her?
Could you just unfriend her and go on with your life unless she contacts you again? If she initiates contact with you again after returning stuff to her, then you can ask "pushy" questions like how are things going to be better if we meet together (platonically or romantically)? What is she looking for with you?
Or, if you aren't feeling it if she contacts you like 1,2 or 10 years later, you could also decline her contact. If you know you will decline her contact, then you might as well just block instead.