What it means when she doesn't reply to your message

If she usually replies within an hour and it's been 6 hours, that's notable. If she typically takes 8 hours and it's been 10, that's noise. The gap between her normal speed and now is what actually tells you something changed.

Also track whether she's gone quiet before and then came back. Some people batch their messages or have phases where they're swamped. That history matters more than the current silence. A person who ghosts then reappears weeks later has a different pattern than someone who's never left you hanging. Pay attention to what's new about her silence, not just that it exists.

After silence, you're restarting. Don't reference the gap, don't apologize, don't make it about her not replying. Instead, send something that moves the ball forward without requiring a big effort from her. A specific plan beats an open question. Asking 'what are you up to this week?' is hard to answer. Saying 'I'm free Thursday or Saturday' gives her two boxes to check.

Keep it light and short. The longer your message, the more pressure she feels to give you a long thoughtful reply. After silence, short works better. You're also testing whether she'll engage with new momentum or if the door has actually closed.

Waiting 24 hours is too soon. She might be actually busy. Waiting a week past her usual response time is too long. The conversation feels dead by then. Three or four days is where enough time has passed that something real probably changed, but it's not so late that you look like an afterthought.

If your follow-up also goes unanswered within 2-3 days, that's your answer. She's not coming back. Sending a third message is just noise at that point. Move on and focus on people who are actually responding. Two chances to engage is fair. A third is chasing.