It sounds like you are truly having some hard times right now in your life. I'm also a mom and understand how sometimes the monotony of everyday life can be less-than-exciting. From what I can tell you are a great mom that is very dedicated to your children, and that is awesome! Kids definitely benefit from daily routines, even when we adults tire from the effort that can go into the details. Keep up the good work!
I am so sorry to hear about the distance between you, your mother and your siblings. That must cause a great deal of sadness that can carry over into the other areas of your life, like work and social situations. Is there a close friend or coworker that you trust that you can share your feelings with? I know that I get very busy with work, kids, other people's expectations, etc. and when I am able to find time to spend one-on-one with a close friend who lets me vent I feel much better afterwards. It can be hard as a busy mom to find the time but it sounds like you need some relief! I'm not sure about you, but I believe in God and that He has everything in His control. Leaning on Him when I'm going through the monotony of long, hard times has helped me so much. I'm here if you need to vent, too!