The core of altruism is to strive for the well-being of others (man and animal) without regard for your own benefit. The essential part of altruism is to think about the well being of all livings on earth without thinking about your own profits. This means you pay attention to animals, the natural environment, living circumstances, humans, religion and processes of fabrication. World is an holistic system you can only change by altruism.
Nepali Children Foundation has these basic assumptions. This means she is also taking responsibility for all aspects of sustainability. Most people only think about environmental sustainability, but sustainability means a lot more:
No living creature (like myself) wants to suffer, but instead strives for happiness. But what is happiness? I experience happiness when I try to help other people or animals no matter if they are friend or foe. Only pursuing once own happiness without regard for anybody else, will not be satisfying on the long run. In one word: compassion, unconditionally giving love without regard for your own profit. In doing so, you have an eye for the well-being for everyone and everything. Your actions are geared towards mutual trust and cooperation and not for maximizing your own benefits. In daily life this will be realized in small things. Sometimes only listen to someone. This is one of the reasons Nepali Children Foundation is not looking for a lot of profit, but looking for mutual trust and understanding, respect and co-operation.