Do i sound reasonable in my letter to my mom?

Start with actually writing a letter. All you're doing here is listing a bunch of commands.

Do you really believe you'll get a positive response to a list of orders to your mother? Really? Would you if it were the other way round?

A much better approach would be to use the old formula: "When you ........ (whatever it is you want changed) ........ I feel ........ (whatever the effect is on you) ...... and I really want you to ............(stop doing it, do it differently, whatever is appropriate, but be specific) ..........."

Also, it would be much better to use the above approach as each issue comes up rather than giving her a list of commands and gripes.

I don't know how old you are but I would think any parent would be enraged if they received a letter set out in the way you have. Please think again unless you want to make the situation worse.

Why not just talk to her. Have a discussion. If you still live at home, then move out and her actions won't bother you. Let H, K and dad fight their own battles.

Don't talk to me about H or K. (H is my brother, K is my sister)

-unreasonable, solution: minimize/cut contact with your mom

Don't say mean things to Dad or be mean to him in my presence.

-unreasonable, let dad deal with it how he chooses, again...minimize/cut contact

Don't say anything about me to H or K.

-unreasonable, minimize/cut contact

Don't judge or characterize me directly or INDIRECTLY

-stop giving her information to judge you on...minimize/cut contact

Don't communicate indirectly.

-cut off her avenues of indirect communication

Don't talk negatively about people I know.

-unreasonable, minimize/cut contact or react with a reasonable consequence

Don't repeat something I said out of context to someone else.

-stop giving her stuff to talk about

Don't trick me into talking to someone I don't want to talk to.

-minimize her ability to do that

DON'T LIE.

-liars lie, minimize/cut contact

Don't try to manipulate me.

-don't give her the chance

Don't bully or punish Dad for hanging out with me.

-dad is a big boy, let him handle it

You can't force someone to change.

Minimizing or cutting off contact with your mom will solve a lot of your problems. Do what you can on your end, stop giving her opportunity. Set some reasonable boundaries. For instance, you can't force her not to lie but you can say 'if you lie to me again, I will (insert consequence)' or ya know, just stop talking to her.

If you shut her down perhaps she will be more open to talking out the issues after a while. Use the time to study effective communication and get therapy if you can.

All reasonable requests. I recommend reading it to her in your voice with a neutral adult 3rd party in the room. Change all the dont's to I dont like its. Tell her how you feel. When you do this, I feel like this.

Did your mother do you wrong or what? That "letter" made you sound like an asshole. Sorry, we need more information.

I think you deserve the Mother you have!

That is such a sweet letter to your Mom, I bet she keeps it until you become mature one day.
I reckon she'll likely read it to your 16yo daughter MANY years from now, and your daughter will say, Mom, you were such a bitch :D But in a loving way.

Anyway a nice read thanks.

So basically your mom has to become another human being just to satisfy you. You're a selfish ass. I bet you still live with your parents, get your laundry done by them, free rent, free food...and yet your demands should be met. Yup you're a free loading giant ass.