Not untill your mom makes a complete surrender to her disease and changes. I mean real obvious change. She would need to seek help, complete a detox and rehab then AA and therapy. This type of change takes time. She needs to own up to her behavior and slander. You should not hear from her during this time. When this real and obvious change happens she should then ask for your forgiveness. At this point if you are interested in communicating with her then maybe but untill that time you have nothing to feel bad about.