You’re welcome <3 You seem like a kind person, and those people are easily taken advantage of. I don’t like seeing people lose that kindness because they forget to put themselves first.
This person you’re dealing with could have any number of good and valid excuses for their behaviour. But it’s still straight up abusive, and could equally stem from a harmful and malicious place. Unless you know for sure, the best you can do is not antagonise them.
An official report would be valid in your situation. But I wouldn’t get involved any further. Just save her messages and any evidence you have of her behaviour, on the off chance it does escalate and you or another coworker need to protect yourselves