First of all its very sad to see how DCFS failed to protect many kids! Its really very saddening to know about it. But its not just DCFS but many such organisations exists in every country around the world, be its US, EMEA, or Asian countries.
But if you really care about these and want to create an impact in this field then you need to be strong, knowledgeable and powerful.
If you want to better the lives of these less-privileged kids then.
1) Become a graduate in Child Welfare Studies, or even Masters so that you can get a good placement and position to work with these Social Service organisations or big NGOs very closely enough to make any changes. This will also fulfill your other dream of traveling places and learn different cultures. (even i share and live the same dream as you :-) )
2) Study Law and secure your license to practice in your state. You can join NGO in their legal dept to battle many disputes and unruly systems against kids. This can be also a travel job as you may be deputed to states that needs your legal advice.
3) I am not sure if you are familiar with CSR initiatives (Corporate Social Responsibility), here the large organizations aims to contribute to societal goals of a philanthropic, activist, or charitable nature by engaging in or support volunteering activities. So you can have a spot here too! Look for jobs in CSR dept as Sustainability and Social Responsibility Manager / Program Manager or Co-ordinator. While studying you can do your internship in CSR dept also to understand how it works. Well this job will also take you to places, but not immediately as it requires some experience of 5-6 years before you start traveling places or get accepted for other states job or abroad jobs.
So Deborah, if bringing smiles to these kids is your ultimate goal then choose the best path that is aligned to your personality and study accordingly to become someone stronger to stand beside them.
Hope this note helps you, all the very best and may all your dreams come true.
All the very best.