Congrats on your 31 days. My partner and I got sober 4 1/2 years ago off weed and alcohol. I still feel newly sober because I used and drank a lot longer than I've been sober. I'm still learning how. I got sober through AA, but I've seen a therapist as well the whole time. I know AA isn't for everyone, so if your therapist is the main resource for your sobriety and you click, stick with her. Whether you can successfully avoid your PTSD issues or not, emotions are gonna come up in everyday life that you are gonna need a guide to help you navigate or it's nearly certain that one day turning to your trusty bottle is gonna seem like a damn good idea. And it's so much harder to quit than to stay quit which is no picnic either. Be very patient with yourself and give yourself every advantage by using all the resources at your disposal. I wish you the best of luck.