It’s good you feel supported here - it’s so important to have a space in life where you feel seen and heard.
I’m sorry to hear he’s so lost in his addiction. It is heartbreaking to live through that: to see someone you care about sink deeper and deeper into their escape from reality. 
This time in your life is about you now. It sounds like you will have to find your support and your strength in your sober community and, more and more as you get stronger, in yourself. Of course there’s Talking Sober, but there’s also lots of meetings going on, online:
Online meeting resources
And there’s lots of useful resources (including other meeting groups) here:
Resources for our recovery
For the moment, stay focused on who you are, and what is important for your health. Remember: you can’t save another person. I don’t say that to be negative. I say that because we sometimes run from one addiction (for example, alcohol) to another: we become the “saviour”, busying ourselves with rescuing others, shielding them from the consequences of their choices. It’s a full time job being the saviour. And just like our drug addiction, it keeps us locked up, isolated and avoiding our own life. (Our life is ours, and ultimately it’s the thing we need to work on. It’s intimidating sometimes, but it’s ours.)
Never give up on yourself Kelly. You’re a good person who deserves a safe, sober life where she can be her full self. Never, ever stop trying. Never, ever give up on being your full, sober self. 