. Sending hugs your way. That is progress. Be prepared to go back and forth with the emotions. The grieving process is not linear and you will take some time to heal.
Your friendship was strong and had a tight bond. This hurts now as you can see and feel the friendship in everything you do. Many daily activities or stories will remind you of her and your times together. This is when you have to remind yourself that the person you have left is not that person. Your friendship did not grow together. I don’t know if there was anything you could or should have done. Sometimes life just takes us in different directions.
I am grateful that you stood up for yourself and did not allow the disrespect and coldness to continue. It is natural to grieve. Know you are not alone
Yes!! Please do so. Would love to see it. As mentioned by @erntedank we have a Halloween thread and would love to see your ghost there Year-round Halloween 
Don’t let her taint your Halloween fun