My mother is a narcissistic, demon possessed jodona

Why does society keep telling me that I'm not allowed to hate my abusive, soul sucking, demonic mother? She is hypocritical and rude. Manipulative, constantly in a pity-me mode. Publicly she is the complete opposite! She always has been. She is a pathological liar. The worst part is how my dad always backs up her crazy ass shit stories and make believe fantasy worlds. She can be so evil if you don't go along with her fantasy world. To this day she constantly demands that I treat her “with respect because I am your mother.”

Here's the letter I wrote to her:
You want to know what's going on? You are beyond exasperating. I have told you numerous times that your complaining (without the goal to solve your problem) is beyond normal and I can't take it. When I tell you I can't take it you tell me “I'm being too sensitive, and deal with it”. Wow. Your insensitivity is exasperating.
You obsess. When I tell you to calm down or that it is normal to feel that way you get worse. When you become overly dramatic, complaining about how hard it is to clean or that it takes you 20 minutes to make your bed – whew – then I become worried because everyday chores seem so extremely difficult for you. When you tell me about complete strangers in your life and your terribly dramatic and horrific experiences I honestly don't know what to say, because if I remain silent and listen you become obnoxious in your story telling, appearing like you need to get a rise out of me. If I do respond you always turn my response into a negative one. So I don't want to listen to you. You make me uncomfortable in how you turn your information sharing session in an attack.
You speak your mind all the time. As in, never appropriately, and rarely pleasantly. I can't remember the last time you ever were polite to me, saying please or thank you. Was it Jan 2013? In the past year, if you say anything to me, it is always to let me know that you think - very little of me or that I am the cause of your stress. You “don't trust” me. You “fear me”. You convinced Dad that the whole reason you had to move to TX was “to take care of me”. You have told me that you believe I “don't love you” or that I “hate you.” You put words in my mouth and presume to know things about me or my mental state that you know nothing about. When I do tell you that you make me uncomfortable or angry you become immediately worse. You become even more verbally and emotionally abusive in the long run.

Yes, I walk away from you because you are a Bully, as a noun: “A blustering, browbeating person, especially one habitually cruel to others. You do this to me constantly. You do this to my husband. We can't stand to be around you when you “have to make a point”, especially when your point is absurdly wrong about a situation... Rude... Illogical... Vicious. Mostly when we are alone, but you have a great way of saying or doing something that will trigger a memory of those alone moments of your abuse to me. And they are so calculated it is impossible for me to believe that you don't do it on purpose! You are so double minded.
First, that is my house. Second, I'm done having a relationship with you. Before we made the trip out here to TX you started demanding outrageous family hierarchy rules and behaviors, and doing odd things. Things that we never agreed to. Things that fly in the face of respecting my marriage and my relationship to you as an equal adult in a shared household. Daily it became worse. By October your only excuse is that you were stressed and could be afforded the luxury of acting this way, and later that you lost a suitcase full of gold and gems I knew nothing about but it was my fault – I probably stole it. Why didn't think to tell me about this suitcase before we left VA? When I asked about it, because you brought it up months later after you moved in and were acting horribly to me, you snapped. That moment is really the turning point for me.
You have told me that I'm “stingy, rude, lazy, selfish, thoughtless, depressed, crazy, demon possessed, a thief, insane, dangerous, uncaring, your baby girl....” I am none of those things. I am a truthful and confident woman who is tired of you constant uneasiness, distrust and obvious need for my subservient attention. I would be happy to give you positive attention if you were not so horrible. You have made it very clear that you want to “be treated with respect” because you are my “mother.”
As far as I can tell a mother should be peaceful, kind, humble, strong when stressed, thankful, and accepting of her children's accomplishments. I don't get any of that from you. Your idea of being proud of me is to exaggerate who I am and what I do, as if my accomplishments are not good enough for you. Since last year it has turned into outright making fun of my hobbies and travels. You make disparaging remarks about my hopes, goals, activities and are constantly remarking how “you just can't trust anyone” or that “people suck”. It is shocking how negative you are concerning me. Never encouraging, never upbeat. Just negative. Can't you just not say anything at all? It's like you just want to piss me off. All the time.

Do not talk to me alone. Do not expect me to talk to you. It is obvious that you want nothing more than to have any excuse to berate me, even if it is to make up some imaginary slight against you. For years you have done this to your own family. You still do this. You have proven to me for almost a year now that you will rarely respect me or talk with me in a reasonable manner. If you want respect from me, something we had hoped to work on in counseling, then act like a civilized adult and show some respect to me. Stop labeling me. You are always wrong when you label and always do it to be emotionally and verbally abusive.

When you decide you would like to have a positive relationship with me;
one where you are not confronting me and my word or actions at every conversation with you;
and when you are comfortable enough just sitting next to me without saying anything or becoming paranoid;
when you can hold your tongue when you think you have something to say to me that will not help;
when you can avoid attacking me and using any of the negative adjectives that you use to describe me of which were mentioned earlier;
when you can talk to me without being emotional or trying to emotionally rile me up,
when you can stop putting words in others mouths as a way to strengthen your point;
then write back. Until then, there is no way I can enjoy sitting with you or talking with you.