Man, sorry that you are going through all of this. Divorce, job stuff, and your mother passing. Wow.
There are rarely any words, especially from a stranger, that can offer much solace in dark times. Nevertheless, my former father in law offered me some one time, and they have always held true for me. He said, "Something terrible happens and you feel empty, like you might die. And then the next day you get up again and that feeling goes away a little bit. And then you get up weeks after that and the feeling is a little less still. And then months and years go by and you might still have that pit in the bottom of your stomach when you recall those days, but you can live again, and enjoy things, and love again."
I strongly believe that we are put here to love each other and help each other, even when that means helping each other along to the next good place. You are doing that for your mom. Mad props.