My heart goes out to you, and I have to tell you that you are a brave woman. You may not believe that right now, but look back at your life and see how much you have in fact dealt with and you are still alive and on your feet.
I will share with you one very valuable lesson that I have learnt in my life, and that relates to asking for help. I have also been in rough patches in my life and felt very alone. At the time I also had pride and refused to ask for help or to allow other people to help me. It took a while for me to realize that we all have a purpose on this earth, and that our purpose always involves other people as well.
During times when things went well with me, I helped others and it made me feel good. When things went bad, I did not ask for help because of pride. One day I realized that helping other give meaning to my life. I then also realized that when I need help, I should not hide behind pride and hesitate to ask for that help.
I have been following a spiritual path (not religious) and realized that when I refuse to ask for help, I deny another person the opportunity to help me and to grow and become a better person from that. I realized that I was becoming more mature because I put my pride aside, and those that helped me became more mature because they had the opportunity to help someone and fulfil their life purpose.
Of course there are always people who just need a little bit of help so that they can get their life back on track again. What if you are one of those that actually have access to people who can and want to help you, and you deny them that opportunity while shooting yourself in the foot?
Of course not everyone can be helped - like this man who abused you and then blamed you for his business decisions. Don't take on his burden - you did not run his business and make his decisions on his behalf.
You are never alone in this world. Take your doctor's advice and go to the government or the church (or both) and say that you need help. When you do that, you will not only get closer to a solution, but you will also give meaning to the life of another person who wants to help.
About your angry daughter - the best you can do is love her. Whenever you think of her, don't think in terms of blame or hurt or any other emotion. Remind yourself of times when you and she got on well together and experienced joy together, and think loving thoughts about her. You do not even need to be in her presence. Your thoughts will reach her, and over time she will be unable to resist that love you consistently send to her.
Another really important thing you have to do, no matter how crazy it sounds, is laugh out loud for a few minutes in the morning. Laughing raises your energy level and releases chemicals in your brain that makes you feel positive. This has a chain reaction, in that when you feel more positive, you see more opportunities and you attract more people to you. If you cannot watch funny comics on TV that will make you laugh, then fake it - just start giggling and continue until you have a belly laugh and your face feels sore from laughing. Then notice how you feel. I have read about people recovering from serious illness and all sorts of life crises just by forcing themselves to laugh every day.
I cannot tell you to not consider suicide - that is entirely your choice. However, I can ask you to start laughing out loud whenever those thoughts come into your mind, and don't stop until the thoughts are gone.
You are still young enough to train for something - I can say that because I am a few years older than you and at the moment preparing for a career change. We are too old to learn new tricks when we are in our graves. You are an intelligent woman going through a rough patch, and considering what you have already gone through, learning new skills will be a walk in the park. Maybe go to a local high school and ask the career guidance teacher for advice on where to start. If you need to train with young people, it will NOT be embarrassing - it will be interesting and you will learn much faster than them because you have much more experience than you think.
And remember you are never alone - your Creator is always looking after you, even in the darkest times. Ask your angels to help you and show you the way, and grab every opportunity that comes your way without questioning or saying you are not good enough. You are good enough - believe me.