Yeah I think it's best for both of you to keep your distance from each other. That said, she is within her right to not want to play with someone, in my view indirectly implying that she finds you toxic is not a personal attack or an insult, and I can hardly ask someone to just suck it up anyway. If you do consider it to be a soft jab, I can only ask that you take the high road and don't engage with it - her opinion of you should have no real impact on you, and likely your opinion of her shouldn't impact her.
If it becomes a consistent thing, then I agree it would need to be curtailed as then it becomes obnoxious and a form of harassment. At which point I ask that you report the posts and I can handle it with her and you separately. I'm keeping an eye on it anyway, but as of right now my view is that nothing has veered into the realm of needing mod intervention.
@Flower I ask that you keep the subposting to an absolute minimum. Suggesting that you don't want to play with someone is fine, but then please leave it at that. Making repeated vague allusions to him is going to be a problem, because then I have to consider that it comes across as trying to wind him up and provoke a reaction. As of right now that line has not yet been crossed in my view, but leave it at this. You've made your position clear, that's all you need to do.