Sidney,
Not only will guilt take us back out, it can literally kill us. You are so brave for putting your children first, to keep them safe. I know it is unbearably hard now on everyone, but keep your head up and know that it will get better. What you are going through, and yes, what they re going through, will all b worth it in the end if you just stay sober. You did the right thing putting their safety first during a relapse, and it is 100% necessary to put your recovery first now. Without it, there is nothing. Forgiveness to ourselves for being sick is paramount, you are not a bad person or parent, you have a sickness that wants you back, and guilt it it's most powerful tool.
Keep your eyes on today, looking back or forward only robs us of the present. If you keep sober today, the tomorrows will take care of themselves.
Cathy