Anyone who has not already seen "The Meatrix" may well find this of interest.

The exception being properly fermented soy.  Fermentation breaks down the harmful phytochemicals.  Come to think of it, fermented grains and legumes would probably help considerably in many respects.  Tell your friend to borrow or buy a copy of wild fermentation by Sandor Katz, full of great recipes for homemade miso and other healing vegan foods.

I eat mostly in season, except in the winter...
I eat fresh fruits, greens, seaweeds, organic grassfed raw meats, seafoods, maybe some insects, raw eggs.  It's all I eat. 
I usually don't drink water.  I get it in my fruits!

How do I know it works? I 've only had one bad cold in my entire life.  I had the flu when I was like 6.
Then again maybe I just have a inherited strong immune system.

lately i have been eating a good amount of homemade hummus (thanks to my father ) and it is delicious, as well as nutritious. I am a vegan for moral reasons, i simply love animals, and do not want to hurt them. The FACTORY FARM is one of the most evil devices imaginable, and is the main reason i abstain from dairy products as well (if you have never heard of or researched the factory farm,  i suggest you do some important research, google?). I very occasionally eat some shellfish and dairy, if it is a treat from someone. Neway, im glad she has decided to do this, more love for the animals!

by the way, google is quite useful for this type of info, including recipes 

also, FRESH foods are very nutritious and healthy. Not to say cooked food is neccesarily bad, but fresh foods are unadultered and contain full nutrition, some of which is lost in the cooking process (including pastuerization).

In general also, avoid processed foods. The idea that vegetarians and vegans are endangering their healths is a myth, what is almost always occuring is someone eating foods that do not nourish you in the first place, such as bleached and proccessed flours and sugars (white bread and high fructose corn syrup are common examples).

Also, i forgot to mention in the original list, drink PLENTY of fresh water, pure as you can possibly get or afford. I personally am supplied by my generous father with spring water, which is all i drink, besides occasional fruit juices. Buy natural spring water in bulk (make sure it is natural spring water, not all bottled water is actually from a natural fresh water source, some such as "dasani" brand and others are simply purified tap water being sold for a similar price), i believe a gallon size container is a little more than a dollar! If you cannot afford that, buy some sort of water purifier contraption, which i suppose is better than regualr tap water, which is unfortunately loaded with harmful chemicals such as chlorine, and (in most places) fluoride. Then again, tap water is still definately better than soda, which is simply carbonated tap water with high fructose corn syrup and artificial colors and flavors.

Hope my advice is appreciated!

And also, about balanced protein intake, i read that eating whole grains and beans will provide the body with a balanced protein intake, though i cannot verify this at the moment (seems to be working well for me ). Also google! try "vegan protein" . I just did and the first two websites are very useful! Here is a link to the first one http://www.naturodoc.com/library/nutrition/protein.htm .

Annemarie Colbin's: Food and Healing (it's on amazon)

It is comprehensive and undogmatic. It is not difficult to read, but then I don't know much about 13-year olds, the mother would certainly enjoy it.

My opinion: people don't know shit about food, it's all trial and error or habit. Intuition is good theoretically, but mostly lost. You have to recover your senses first. This is the ultimate basic guide. There might be others, which I don't know.

From my experience: especially vegetarians can go soooo wrong and become sick and rigid.

So check it out,

glamdring

Not if the animal doesn't know its going to be killed.  This is probably part of why Jewish kosher laws are strict on humane killing for the animals.  It means that if you're hunting, the better that first shot is, the better the meat will be.  If you are raising your own animals, it is possible and vastly preferable to calm the animals down before you kill them.  Do it well away from the other animals, and stroke or pet the animal until it relaxes, and talk to it too if that is your thing (then kill it quick).  It may be hard for some people to imagine, but it is standard practice in many traditional societies to only kill animals with great love, respect and gratitude.

That is the right way to do!

I like pig, but the best is wild pig, mmmm.

First of all when an animal is killed lots of adrenalin rushes to it's blood/muscle tissues and we eat animal's muscle mostly. So it's very possible we take some unwanted chemicals to our body.

Not if the animal doesn't know its going to be killed.  This is probably part of why Jewish kosher laws are strict on humane killing for the animals.  It means that if you're hunting, the better that first shot is, the better the meat will be.  If you are raising your own animals, it is possible and vastly preferable to calm the animals down before you kill them.  Do it well away from the other animals, and stroke or pet the animal until it relaxes, and talk to it too if that is your thing (then kill it quick).  It may be hard for some people to imagine, but it is standard practice in many traditional societies to only kill animals with great love, respect and gratitude.