A couple of things I'll throw out for you to consider.
Watch your back. Morons, being the morons that they are, rarely learn lessons.
You think she was mad at you before... Don't doubt for a moment that she's not seething inside and harboring a deep seated resentment. The longer it builds, the harder it will be for her not to act out.
She knows you're armed, but you did not shoot her. She might even have the delusion that you really wouldn't shoot her. Be on the lookout for covert or late night acts of retribution and petty vandalism.
Make damn sure you, and your kids don't do anything that can be seen by others (witnesses) as provoking her, or any of her spawn.
Don't dismiss any petty acts of vandalism to your property. Car getting keyed, mysterious flat tires, etc. Always call the police and make a report for every incident. Make sure they actually make a report and file it. Don't let the police try to talk you out of making a report.
Not all LEO's are lazy, but some are, and will just come out and talk with you and try to down play it saying a report isn't necessary. Demand one, it's your right! You don't have to accuse her, and I wouldn't unless you have evidence. But make sure a report with an official report number that can be retrieved later is generated. You don't just want a dispatch log which shows the police responded to your house (there is a difference).
If she ever gives you another verbal confrontation, or threat, immediate pay the fee to get an order of protection.
All that will stand as a record in case she ever goes off the deep end and you need to actually use lethal force to defend yourself.
Trust me, people who swim in her end of the gene pool, rarely learn lessons. They are petty and vindictive people and want instant gratification for their anger. Remember, a stupid person can get the best of you and kill you as easily as any brilliant and maniacal master tactician if you underestimate them, and give them an opportunity.
You've seen your enemy. Don't underestimate her capabilities. And don't discount her willingness to send agents to do her bidding (her kids or other mental midgets).
You don't have to lead a paranoid life, but you can ill afford to be complacent either. Complacency is what gets people killed. Never underestimate your opponent no matter how stupid you think they may be.Good luck. I hope nothing further comes of this.
For the record, I think you handled the initial situation just fine. Could it have been done differently? Of course. In any number of ways. But the way you chose to handle it was not out of line either.
^^^^^^^^^This is good, ^^^^^^^^^
Check that, excellent stuff here nano3, hopefully you are heeding this