Get your sister to give her some fish that is high in omega-3s like salmon or sardines. Actually even better is get her to give her mother a capsule of blue-green algae (like spirulina) everyday. Fish get all of their omega-3s from eating algae. So the above is a food that is high in omega-3s. It also has low molecular weight proteins that pass through the blood brain barrier.
It is not a plant or animal. Technically it is cyano-bacteria. It existed before them and all plants and animals came from it. It existed on the earth when there was no oxygen in the air and no other life. It then put the oxygen in the air. They are whole food supplements. Do not take tablets since most pass through the stomach and end up in the feces or stool.
These supplements have more more omega-3s than fish, more B-12 than liver, more iron than spinach, more calcium than milk, more beta-caroteen than carrots and more vitamin E than wheat germ. It is called a super-food. The number one supplement in Japan is chlorella. It is green algae. It is also called a superfood. Both help the body to detox itself of heavy metals and radiation.
On this site it says:
Dr. Oz, the renowned professor at Columbia University, and a regular guest on the Oprah Winfrey Show, recommends Spirulina as one of the most important anti-aging nutritional supplements. Spirulina plays an important role in slowing down the aging process through its antioxidant/anti-inflammatory effects. It is also a perfect source of protein and is a completely absorbable wholefood vitamin and mineral supplement. [it is mentioned in his book, YOU: The Owners Manual]What do the 2 last U.S. Presidents have to do with omega-3. President George Bush took omega-3 supplents for nutrition. Now President Obama has a novelty item sold in his likeness. It is called Chia-Obama. The chia seeds grow for his hair. Chia seeds are the highest plant source of omega-3s and you can eat them. The Aztecs would put them in water for 15 minutes and drink this. See this site for more on nutrition and whole food supplements containing both green and blue-green alagaes.
The USA dropped Fat Man and Little Boy on Japan during World War 2. They killed hundreds of people and caused Japan to surrender (code names for the atom bombs droped). Millions were dying slowly from radiation poisoning. Japan did research and found that spirulina (bg algae) could help the body get rid of the radiation due to the sodium alginate in it. So hundreds of thousands of people died to enable your mother to take this whole food supplement. Of all countries that record births in writing, Japan and the little island next of it, Okinawa are the 2 countries with the longest living people.