Do not pretend that you do not have some very violent thoughts. If you have been physically abused, it is injected into your mind.
You may not carry through with your plot, as Tina did not; but to hold those thoughts is not positive.
Don’t make a speech, don’t give clues, be like Tina. Get up, pack, leave and never return.
No matter who is the abuser, whether a family member, spouse, boss, leave without any fanfare.
Leave in such an ambiguous way it causes the Abuser to hesitate before pursuit.
If you do not, you might very well be driven to murder.