Be very proud of yourself for 9 months of recovery and for being the best Mom you can be. Take some time to pat yourself on the back for how far you have come.
I very much relate to your feelings of guilt and shame. They are very hard to shake. But, the thing is, those feelings will lead you back to drinking again if you allow them to do that. As hard as it is to forgive yourself, it's so important for your recovery. And remember that forgiving yourself doesn't mean you forget what has happened. It means you put down the burden and begin to move forward.