I wouldn't second guess yourself now. You did what you thought was right at the time. No one really knows what is the best way of handling it. Each situation is different even though there are similarities between each one.
At this point, I would say keep improving yourself and maybe start trying to detach yourself from her. I am currently trying to do that while I do my 180's and it is becoming a little easier dealing with this whole mess. I am not fully there yet but I keep my breakdowns to when I am alone. Sometimes it feels good to just let it all out. You can't just keep bottling these feelings inside as I feel eventually they will eat at you from the inside and obstruct your personal growth.
As caring individuals and men who truly love their W's, we have to realize we are not without feeling and would not want to be cold individuals anyways. We have to just learn how to cope with our feelings and realize that the pain won't last forever either way. Its a hard fact that I am currently trying to accept. I pray for all the posters on this site and it truly saddens me to see so much pain out there.
I hope for the best for you and for all of the other DB posters in this forum. This site has been one of the most mentally and emotionally reassuring forums for me. I find strength in the kindness and sincerity of the many posters here. Thank you all.
