You see, this thing of "she mocked me and she verbally abused me and called me names" is a little bit less serious than actual threats of physical violence, (which the courts see a lot of) after it has agreed to listen to your case. And no matter how much you wish you didn't have to ever see her again, you cannot expect to just detonate a complaint and have the courts call her in and make her stop, while you run off somewhere safe and hide. You will need to show up, preferably represented by an attorney, and be in the business of presenting yourself as the responsible party in this situation. Absolutely, it does not need to look like it has become in any way just a sibling spat where everyone has been upping the ante until it has come to this.
I have seen hearings where one or another of the parties did not show, and believe me, you do NOT want to be the one who doesn't show up. If she does show up, it's not likely she will be able to mock or verbally abuse you too much in the formal court situation, though you will have to be in the same area for a while. Walk away, do not engage.
Yes, you picked up on it. We've had a little issue going on in our lives too. Having ignored calls, texts, letters, messages left with other family members, etc, I fully expect a home visitation from the wicked witch of the west at some point! In preparation for this we have installed security cameras, started locking all doors, even when we are inside the house, spoken to local law enforcement and enlisted the observation powers of our neighborhood watchers. Since this is the rural Southeastern area, and it is virtually mandatory that one be armed, we fully expect her to show up with her tools of war and likely drunk. In a moment of fabulous judgment back in the day when they were together, my husband taught her to shoot, so it'd be a fine irony if she comes in blasting at us.
I do believe in the total non-response method, but I am really hoping this works out well for you and that perhaps soon your sister will be out of the picture. Keep doing the therapy, growing and improving your own life.