Im honestly waiting for opportunity to tell her to f off then banish again.
when contact with an ex does happen, it can be a way to gauge our detachment process.
at the same time, i wouldnt recommend someone go and deliberately test it, in the same i wouldnt recommend someone get back with their ex in order to break up with them, ya know?
if my ex were to contact me (its been over ten years since we broke up, and i dont expect that would happen), i could handle it emotionally. i could be cordial. im not sure what the point would be; we dont have anything to say to each other at this point, but if she really wanted to, i wouldnt reject her or feel the need to avoid her out of protection.
i dont see a lot of potential here for you to be wounded, or for you to go getting back together with your ex. at the same time, im wondering what the point is. it doesnt sound like you desire a friendship with this person.
so then, what is the waiting game all about?
is there an element, perhaps, of drama, some excitement to see what happens next? is there an element of using the contact to see her in a lesser way and make her less significant? is there an element of wanting an opportunity to reject her?
consider, in any of those cases, what might happen if things didnt go according to plan. for example, what if she, for whatever reason, started paying less attention, or even totally ghosted? it probably wouldnt be the end of the world for you, but at the same time, there can be a certain comfort in a situation like this, when one feels control over it, until they dont, and then the waiting game becomes about getting it back. in some ways, there can be an element of reliving the old relationship dynamics.