I would suggest not replying to any messages period. She's trying to keep you engaged in her drama. She keeps banging on about the same things, and she's revealing the weakness of her position with every message and every threat. She's puffing herself up with the attorney comments to make her look like a bigger threat. If she had an attorney engaged, that's who would be contacting you, she'd be paying them to step in and shield her. And if one contacts you, meh. It's still just brandishing.
I empathize that it's natural to want to have a weapon in return that she didn't allow guests in the loft, but it really doesn't apply to the main issue, which is the mold. It's kind of like running to the teacher and saying, "She did this, and she also did this!" so that you look like more of a victim and get more favor in case the first thing she did toward you wasn't egregious enough. Like I mentioned in the other thread, you'd have a stronger defense if you file no contact against her, and it's getting to the point of harrassment now. But it's up to you to decide if that's necessary, I personally would wait until she crossed a line worse than mere puffery and trying to convince.
You've already responded, no further response is required. Stand firm, you've already said everything you need to say and have evidence, don't let her provoke responses and take your power. It's very easy to get worked up and slip up, which would be to her benefit. It may not feel like an active response to a threat, but there's much more power in giving her the silent treatment from now on. If she actually does engage an attorney (which I doubt), and take it to courts (which I seriously doubt), any little thing you say can be picked apart and manipulated against you.
Picture it this way: you're the billy goat on top of the mountain. You're firmly grounded. She keeps charging up the peak and trying to slam into you to knock you off balance, but instead she goes tumbling back down. Then she charges back up and does the same thing. You're still there, doing nothing more than standing, and she's expending all that energy for no result. Eventually she'll get tired, maybe regroup and try again, and you'll still be standing there unmoved and unmoveable. Eventually she'll give up.
@Mike-And-Jane0 gave great advice, chill out and ignore. If you chill out with a cocktail, raise a glass to the host and thank her for repeatedly revealing the strength of your position. The next time in life that someone tries to shake your firm position, it will be even easier because, *yawn*, you've been through this before.
