Hi Dude,
I’m kinda agree with April here to a degree, but understanding women is a time honoured mystery men have been trying to unravel forever!
When you were dating this woman she saw you as a pet (for want of a better word) someone she could have influence over and could possibly control. As soon as you decided that dating her was not for you this tips the balance of her supposed seduction powers and to boost her ego she tests you out.
First when you stop calling her ego is dented even though she never really wanted you, so to see if she could still attract you she starts to play the game. She waits to see if you’ll call you don’t so she texts you to see if you’ll bite and you do.
She dosen’t really want to talk with you she just needs to no that she still holds some attraction power over you and texting is a great way to communicate without having to commit emotionally.