Glad you sent the package.
In my experience, people like her are so self-absorbed that anything you say to them will not compute. No matter what you say, how clear, vague, long-winded, brief, shocking, polite or diplomatic, she's going to blame *you* and think *you* were rude and at fault.
I agree with the PP who said just do what's best for your mental-health. If it's therapeutic to tell her off, do it. If it's less stress on you to delete and block email and phone, do it.