Dan - Don't tell her you responded. She will find out.
Look at your success in not responding in your previous post (about the gift). You gave her the time and space to think on her own. Let her navigate her feelings on her own.
In the meantime, notice how you are feeling while you have to sit and wait and go against your instincts to reach out. Be mindful that you can tolerate those emotions without the same old knee-jerk reactions. I think emotional awareness is a key step to overcoming NGS.