6 months is a long time in DB land. Let the dust continue to settle.
I understand slipping back into thinking about her, I'm doing the same right now. It's still hard. That's exactly the time you want to reach out and act, and also the worse time to do so.
Maybe search the site (use a search engine w/ the site specified) for how long or other such phrases. You'll see a number of people say they hadn't had contact for months or even years, then boom S reappears and wants contact. I'm not saying yours will, but lack of contact doesn't mean it will continue to be that way and that you won't get your chance to show her the new you at some point.
Good luck.
Me: 50 W:43 S6, S3 M: 12 yrs. T: 17 M is bad & Not happy Bomb Mar '14 S 5 Feb '15 D Bomb 13 Apr '15 (but "no hurry") DB Coach May '15 Wants proceed on D Aug '15 Starting 1-on-1 negotiations Sept '15