Hi Kms2014,
You are an amazing strong woman, who has done the best for herself and her family. Do not doubt yourself. If you want someone to speak to, or perhaps for your children, the Icarus Trust provides support for families of addicts. This would be great reassurance for you, and it will be from someone who has been in your position. You can check out their website on http://www.icarustrust.org or email them directly on info@icarustrust.org.
I wish you and your children the very best.