I think you're on the right path. How many times do we need to tell people here that they need to find happiness from within themselves? All the time. You, yourself recognize this need and it is good.
I'm glad you didn't react to her email and took a step back to evaluate and respond. You have done the work on yourself. She ran away into fantasy-land thinking that OM would solve all her problems. She has found out it's not possible. When the bubble burst she sees a bright/new "future." A man who knows what he wants and will go out and get it. She doesn't know who SHE is or what she wants or needs. You have a new life and she doesn't quite know how she can fit into that.
You know that she has been "running" and hiding most of her life. She drew her validation from others. Her clarity of this means she wants to find other activities to get it from. If they can help her, that is good. Give her that chance. Don't be resentful about it. Find indirect ways to give her that validation wherever possible.
You can only pull the "loss" card out so many times. This is not one of those times. I don't think you need to say anything about the "friends talk" either. As for yourself, you said it, "time to get busy again." But this time don't be too mysterious. Be open about it. It's that happy, self-confident man that drew her back. Keep on being him -- FOR YOURSELF. Resuming dating right now is not an option. It will be seen as retaliation and will prompt her to do the same. Just be cool, relax and go with the flow. If she steps out and wants to date others... then you know what you need to do. Until then, give her the benefit of the doubt.
M:11 | T:12 | Status: Married 4C's of WAS communication: Cool, Calm, Collected and CONFIDENT