Angel77

You may have some dipression issues, but take it from someone who's been there, done that. I've been married and out of the house now for 10 years and up until recently I really thought that my mom hated me because of something I did. Finally, during a conversation while she was ripping me a new one, she said something that only had to do with her life. It was then that I was able to look back and see that the other fights were really about what she hated in herself, not me.
You need to get out of there for your safety and sanity!!! You are going to have to stand up and take responsibility or it will never change. I'm not saying own what problems your mom is having, but you can change how your life is going. First things first, get out!!! She's not good for you or herself, and if you're suffering from depression it's only going to get worse staying in the home.
My guess is that she's upset about her marriage ending (she probably had some responsibility) and it's easier to make you the target, than to look in the mirror.
And to answer your questions----NO IT IS NOT NORMAL. She's going to end up huritng you.
Keep plugging along and get ready to make the change. Be prepared for the guilt trips that will be headed your way. They will and they'll be awful!! Just know that just as it is up to you to find your happiness it is upto your mom to find hers. Remember, misery loves company and sweetheart you're the company.

Good luck, let us know how you're doing.