Followed up on every note you left. The build that's up now is not the one you played.
1 & 2. The bare number is gone. I moved the wait into the phone's own clock instead: hesitate and the status bar slides from 2:14 AM toward 2:18. Same information your 28 gave you, but it reads as the scene now, not a readout. The ending still lands on it ("you waited 42s. she waited 29s."). You were right that an unlabeled number just looks like debug.
3. Erase reacts to a tap now (a small shake), not only a hold.
Your question was the real one, and the answer changed: yes. Sit in the silence and she can go quiet back, longer than you did. Wait again and she leaves. Waiting has teeth now.
Build v3 is on the page if you want another run. Thanks for getting to the ending. You were the first person besides me to see it.