Sorry about the loss of your Mom. I've never experienced that so I can only imagine the pain you are going through right now. Try to remember she is in a better place.
I honestly don't know what to say but I'll try my best to use some words to help you out. Sounds like this is Murphy's law part of your life. Basically if something can go wrong right now it will. Everyone goes through it at some point in their life. You have to fight through it. Better days will be ahead. It might take awhile before you truly feel better but it will happen.
Stay strong and do not let these problems make you drink. Because if you go back to drinking this part of Murphy's Law part of your life can continue and not stop. Fight through it and do it sober!!! You can look back then and say 'if I got through this sober it truly proves that I do not need alcohol. I can deal with anything while being sober and thinking straight'
You can do it man. Good luck and God Bless.