Growing up...
Was life perfect? Nope. Could it have been worse? OH HELL YEA!
I'm grown up, I got my shit together. I forgave me mom for the past. I see it in her sometimes that she regrets a lot of things growing up, but she had to do what she had to do to survive. We have a good relationship. Growing up, I sould sometimes cry myself to sleep wanting to just die and leave the world behind. Now, I'm greatful to be alive and cherish everything I have and always look forward to another day.
It's okay to be angry. But after a certain point, you need to take control of your life and your emotions. Have a talk with her. You got angry, that's fine. What will you do about it? Will you continue to be angry or would you talk to her?