STBX has called three times this morning. I ignored these calls. I don't feel like helping her deal with the guilt she might be feeling right now.
Exaaaactly. If she texts you later with a "You okay?" (after presumably you get served), just delay a couple of hours and maybe reply with an "Of course. Not what I would have wanted, by any stretch, but I realize now I'll be just fine no matter what the outcome" (or something similar).