Saving my mom

Hey everyone. So here is the short story. For the past year, my mom has been battling depression. Almost a year ago, I had to tell her that my dad (her husband/best friend of 34 years) was having an affair with someone who was three years younger than me (I'm 29). He basically had a whole secret life and even had a child with this lady.

My mom has always been a stay at home mom. My mom is my life, and my best friend and has been the best mother to myself and my two brothers that she could have ever been. Every thing I learned I learned from her. She is my hero. So now that my mother found out my dad was having an affair she's stuck, she has no money and now needs to start from the ground up (She's a stay at home mom, and she's depended on him her whole life) so I've now had to pick up the slack and have been paying for her house and her bills and even for my younger brothers things. (I'm only 29, and working 70+ hours a week)

I've fallen way behind on my bills. My car payment, our house bills, everything is just way too overwhelming right now and I don't have anywhere to turn except for here for help.

She's currently bedridden right now. She's in a huge depression and refuses to leave bed except for therapy (that I'm paying for).

I can't tell her that I'm behind on bills, because she already feels like a big burden as it is. I'm doing anything and everything to try and find some sort of way to make all of this work. I need to have my mom back, or some sort of normalcy in my life back. I'm going crazy.