UPDATE:

So my ex has been texting me the last few days (just making small talk) and asking things like how am I doing etc.

I have ignored her messages for a few days and now she's texting me things like are you not speaking to me?

I feel like she's stopping me from moving on and more importantly I don't know why she is reaching out to me when I dumped her.

I'm inclined just to block her and delete her number.

It feels like some game that she's playing with me.