This is a testing-frame dynamic with clear D/s overtones. She's signaling brat play ('I just like to be a brat about it sometimes') and you've set a hard boundary ('I break them'). The phone delay is plausible but the timing (4 days) and framing ('Sorry for the very late reply 🙃') reads like a test of your stated consequence. She's watching to see if you'll follow through.

Enforce the consequence

Testing me with silence and a smirk? I meant what I said. Send me a picture of what you're wearing right now.